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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\AbuseFilter\View; |
| 4 | |
| 5 | use DifferenceEngine; |
| 6 | use MediaWiki\Content\TextContent; |
| 7 | use MediaWiki\Context\IContextSource; |
| 8 | use MediaWiki\Extension\AbuseFilter\AbuseFilterPermissionManager; |
| 9 | use MediaWiki\Extension\AbuseFilter\Filter\ClosestFilterVersionNotFoundException; |
| 10 | use MediaWiki\Extension\AbuseFilter\Filter\FilterNotFoundException; |
| 11 | use MediaWiki\Extension\AbuseFilter\Filter\FilterVersionNotFoundException; |
| 12 | use MediaWiki\Extension\AbuseFilter\Filter\HistoryFilter; |
| 13 | use MediaWiki\Extension\AbuseFilter\FilterLookup; |
| 14 | use MediaWiki\Extension\AbuseFilter\SpecsFormatter; |
| 15 | use MediaWiki\Extension\AbuseFilter\TableDiffFormatterFullContext; |
| 16 | use MediaWiki\Html\Html; |
| 17 | use MediaWiki\Linker\Linker; |
| 18 | use MediaWiki\Linker\LinkRenderer; |
| 19 | use OOUI; |
| 20 | use Wikimedia\Diff\Diff; |
| 21 | |
| 22 | class AbuseFilterViewDiff extends AbuseFilterView { |
| 23 | /** |
| 24 | * @var HistoryFilter|null The old version of the filter |
| 25 | */ |
| 26 | public $oldVersion; |
| 27 | /** |
| 28 | * @var HistoryFilter|null The new version of the filter |
| 29 | */ |
| 30 | public $newVersion; |
| 31 | /** |
| 32 | * @var int|null The history ID of the next version, if any |
| 33 | */ |
| 34 | public $nextHistoryId; |
| 35 | /** |
| 36 | * @var int|null The ID of the filter |
| 37 | */ |
| 38 | private $filter; |
| 39 | /** |
| 40 | * @var SpecsFormatter |
| 41 | */ |
| 42 | private $specsFormatter; |
| 43 | /** |
| 44 | * @var FilterLookup |
| 45 | */ |
| 46 | private $filterLookup; |
| 47 | |
| 48 | /** |
| 49 | * @param AbuseFilterPermissionManager $afPermManager |
| 50 | * @param SpecsFormatter $specsFormatter |
| 51 | * @param FilterLookup $filterLookup |
| 52 | * @param IContextSource $context |
| 53 | * @param LinkRenderer $linkRenderer |
| 54 | * @param string $basePageName |
| 55 | * @param array $params |
| 56 | */ |
| 57 | public function __construct( |
| 58 | AbuseFilterPermissionManager $afPermManager, |
| 59 | SpecsFormatter $specsFormatter, |
| 60 | FilterLookup $filterLookup, |
| 61 | IContextSource $context, |
| 62 | LinkRenderer $linkRenderer, |
| 63 | string $basePageName, |
| 64 | array $params |
| 65 | ) { |
| 66 | parent::__construct( $afPermManager, $context, $linkRenderer, $basePageName, $params ); |
| 67 | $this->specsFormatter = $specsFormatter; |
| 68 | $this->specsFormatter->setMessageLocalizer( $this->getContext() ); |
| 69 | $this->filterLookup = $filterLookup; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Shows the page |
| 74 | */ |
| 75 | public function show() { |
| 76 | $show = $this->loadData(); |
| 77 | $out = $this->getOutput(); |
| 78 | $out->enableOOUI(); |
| 79 | $out->addModuleStyles( [ 'oojs-ui.styles.icons-movement' ] ); |
| 80 | |
| 81 | $links = []; |
| 82 | if ( $this->filter ) { |
| 83 | $links['abusefilter-history-backedit'] = $this->getTitle( $this->filter )->getFullURL(); |
| 84 | $links['abusefilter-diff-backhistory'] = $this->getTitle( "history/$this->filter" )->getFullURL(); |
| 85 | } |
| 86 | |
| 87 | foreach ( $links as $msg => $href ) { |
| 88 | $links[$msg] = new OOUI\ButtonWidget( [ |
| 89 | 'label' => $this->msg( $msg )->text(), |
| 90 | 'href' => $href |
| 91 | ] ); |
| 92 | } |
| 93 | |
| 94 | $backlinks = new OOUI\HorizontalLayout( [ 'items' => array_values( $links ) ] ); |
| 95 | $out->addHTML( $backlinks ); |
| 96 | |
| 97 | if ( $show ) { |
| 98 | $out->addHTML( $this->formatDiff() ); |
| 99 | // Next and previous change links |
| 100 | $buttons = []; |
| 101 | $oldHistoryID = $this->oldVersion->getHistoryID(); |
| 102 | if ( $this->filterLookup->getFirstFilterVersionID( $this->filter ) !== $oldHistoryID ) { |
| 103 | // Create a "previous change" link if this isn't the first change of the given filter |
| 104 | $href = $this->getTitle( "history/$this->filter/diff/prev/$oldHistoryID" )->getFullURL(); |
| 105 | $buttons[] = new OOUI\ButtonWidget( [ |
| 106 | 'label' => $this->msg( 'abusefilter-diff-prev' )->text(), |
| 107 | 'href' => $href, |
| 108 | 'icon' => 'previous' |
| 109 | ] ); |
| 110 | } |
| 111 | |
| 112 | if ( $this->nextHistoryId !== null ) { |
| 113 | // Create a "next change" link if this isn't the last change of the given filter |
| 114 | $href = $this->getTitle( "history/$this->filter/diff/prev/$this->nextHistoryId" )->getFullURL(); |
| 115 | $buttons[] = new OOUI\ButtonWidget( [ |
| 116 | 'label' => $this->msg( 'abusefilter-diff-next' )->text(), |
| 117 | 'href' => $href, |
| 118 | 'icon' => 'next' |
| 119 | ] ); |
| 120 | } |
| 121 | |
| 122 | if ( count( $buttons ) > 0 ) { |
| 123 | $buttons = new OOUI\HorizontalLayout( [ |
| 124 | 'items' => $buttons, |
| 125 | 'classes' => [ 'mw-abusefilter-history-buttons' ] |
| 126 | ] ); |
| 127 | $out->addHTML( $buttons ); |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * @return bool |
| 134 | */ |
| 135 | public function loadData() { |
| 136 | $oldSpec = $this->mParams[3]; |
| 137 | $newSpec = $this->mParams[4]; |
| 138 | |
| 139 | if ( !is_numeric( $this->mParams[1] ) ) { |
| 140 | $this->getOutput()->addWikiMsg( 'abusefilter-diff-invalid' ); |
| 141 | return false; |
| 142 | } |
| 143 | $this->filter = (int)$this->mParams[1]; |
| 144 | |
| 145 | $this->oldVersion = $this->loadSpec( $oldSpec, $newSpec ); |
| 146 | $this->newVersion = $this->loadSpec( $newSpec, $oldSpec ); |
| 147 | |
| 148 | if ( $this->oldVersion === null || $this->newVersion === null ) { |
| 149 | $this->getOutput()->addWikiMsg( 'abusefilter-diff-invalid' ); |
| 150 | return false; |
| 151 | } |
| 152 | |
| 153 | if ( !$this->afPermManager->canViewPrivateFilters( $this->getAuthority() ) && |
| 154 | ( $this->oldVersion->isHidden() || $this->newVersion->isHidden() ) |
| 155 | ) { |
| 156 | $this->getOutput()->addWikiMsg( 'abusefilter-history-error-hidden' ); |
| 157 | return false; |
| 158 | } |
| 159 | |
| 160 | if ( |
| 161 | ( |
| 162 | $this->oldVersion->isProtected() && |
| 163 | !$this->afPermManager->canViewProtectedVariablesInFilter( |
| 164 | $this->getAuthority(), $this->oldVersion |
| 165 | )->isGood() |
| 166 | ) || |
| 167 | ( |
| 168 | $this->newVersion->isProtected() && |
| 169 | !$this->afPermManager->canViewProtectedVariablesInFilter( |
| 170 | $this->getAuthority(), $this->newVersion |
| 171 | )->isGood() |
| 172 | ) |
| 173 | ) { |
| 174 | $this->getOutput()->addWikiMsg( 'abusefilter-history-error-protected' ); |
| 175 | return false; |
| 176 | } |
| 177 | |
| 178 | try { |
| 179 | $this->nextHistoryId = $this->filterLookup->getClosestVersion( |
| 180 | $this->newVersion->getHistoryID(), |
| 181 | $this->filter, |
| 182 | FilterLookup::DIR_NEXT |
| 183 | )->getHistoryID(); |
| 184 | } catch ( ClosestFilterVersionNotFoundException $_ ) { |
| 185 | $this->nextHistoryId = null; |
| 186 | } |
| 187 | |
| 188 | return true; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * @param string $spec |
| 193 | * @param string $otherSpec |
| 194 | * @return HistoryFilter|null |
| 195 | */ |
| 196 | public function loadSpec( $spec, $otherSpec ): ?HistoryFilter { |
| 197 | static $dependentSpecs = [ 'prev', 'next' ]; |
| 198 | static $cache = []; |
| 199 | |
| 200 | if ( isset( $cache[$spec] ) ) { |
| 201 | return $cache[$spec]; |
| 202 | } |
| 203 | |
| 204 | $filterObj = null; |
| 205 | if ( ( $spec === 'prev' || $spec === 'next' ) && !in_array( $otherSpec, $dependentSpecs ) ) { |
| 206 | $other = $this->loadSpec( $otherSpec, $spec ); |
| 207 | |
| 208 | if ( !$other ) { |
| 209 | return null; |
| 210 | } |
| 211 | |
| 212 | $dir = $spec === 'prev' ? FilterLookup::DIR_PREV : FilterLookup::DIR_NEXT; |
| 213 | try { |
| 214 | $filterObj = $this->filterLookup->getClosestVersion( $other->getHistoryID(), $this->filter, $dir ); |
| 215 | } catch ( ClosestFilterVersionNotFoundException $_ ) { |
| 216 | $t = $this->getTitle( "history/$this->filter/item/" . $other->getHistoryID() ); |
| 217 | $this->getOutput()->redirect( $t->getFullURL() ); |
| 218 | return null; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | if ( $filterObj === null ) { |
| 223 | try { |
| 224 | if ( is_numeric( $spec ) ) { |
| 225 | $filterObj = $this->filterLookup->getFilterVersion( (int)$spec ); |
| 226 | } elseif ( $spec === 'cur' ) { |
| 227 | $filterObj = $this->filterLookup->getLastHistoryVersion( $this->filter ); |
| 228 | } |
| 229 | } catch ( FilterNotFoundException | FilterVersionNotFoundException $_ ) { |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | $cache[$spec] = $filterObj; |
| 234 | return $cache[$spec]; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * @param HistoryFilter $filterVersion |
| 239 | * @return string raw html for the <th> element |
| 240 | */ |
| 241 | private function getVersionHeading( HistoryFilter $filterVersion ) { |
| 242 | $text = $this->getLanguage()->userTimeAndDate( |
| 243 | $filterVersion->getTimestamp(), |
| 244 | $this->getUser() |
| 245 | ); |
| 246 | $history_id = $filterVersion->getHistoryID(); |
| 247 | $title = $this->getTitle( "history/$this->filter/item/$history_id" ); |
| 248 | |
| 249 | $versionLink = $this->linkRenderer->makeLink( $title, $text ); |
| 250 | $userLink = Linker::userLink( |
| 251 | $filterVersion->getUserID(), |
| 252 | $filterVersion->getUserName() |
| 253 | ); |
| 254 | return Html::rawElement( |
| 255 | 'th', |
| 256 | [], |
| 257 | $this->msg( 'abusefilter-diff-version' ) |
| 258 | ->rawParams( $versionLink, $userLink ) |
| 259 | ->params( $filterVersion->getUserName() ) |
| 260 | ->parse() |
| 261 | ); |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * @return string |
| 266 | */ |
| 267 | public function formatDiff() { |
| 268 | $oldVersion = $this->oldVersion; |
| 269 | $newVersion = $this->newVersion; |
| 270 | |
| 271 | // headings |
| 272 | $headings = Html::rawElement( |
| 273 | 'th', |
| 274 | [], |
| 275 | $this->msg( 'abusefilter-diff-item' )->parse() |
| 276 | ); |
| 277 | $headings .= $this->getVersionHeading( $oldVersion ); |
| 278 | $headings .= $this->getVersionHeading( $newVersion ); |
| 279 | $headings = Html::rawElement( 'tr', [], $headings ); |
| 280 | |
| 281 | $body = ''; |
| 282 | // Basic info |
| 283 | $info = $this->getDiffRow( 'abusefilter-edit-description', $oldVersion->getName(), $newVersion->getName() ); |
| 284 | $info .= $this->getDiffRow( |
| 285 | 'abusefilter-edit-group', |
| 286 | $this->specsFormatter->nameGroup( $oldVersion->getGroup() ), |
| 287 | $this->specsFormatter->nameGroup( $newVersion->getGroup() ) |
| 288 | ); |
| 289 | $info .= $this->getDiffRow( |
| 290 | 'abusefilter-edit-flags', |
| 291 | $this->specsFormatter->formatFilterFlags( $oldVersion, $this->getLanguage() ), |
| 292 | $this->specsFormatter->formatFilterFlags( $newVersion, $this->getLanguage() ) |
| 293 | ); |
| 294 | |
| 295 | $info .= $this->getDiffRow( 'abusefilter-edit-notes', $oldVersion->getComments(), $newVersion->getComments() ); |
| 296 | if ( $info !== '' ) { |
| 297 | $body .= $this->getHeaderRow( 'abusefilter-diff-info' ) . $info; |
| 298 | } |
| 299 | |
| 300 | $pattern = $this->getDiffRow( 'abusefilter-edit-rules', $oldVersion->getRules(), $newVersion->getRules() ); |
| 301 | if ( $pattern !== '' ) { |
| 302 | $body .= $this->getHeaderRow( 'abusefilter-diff-pattern' ) . $pattern; |
| 303 | } |
| 304 | |
| 305 | $actions = $this->getDiffRow( |
| 306 | 'abusefilter-edit-consequences', |
| 307 | $this->stringifyActions( $oldVersion->getActions() ) ?: [ '' ], |
| 308 | $this->stringifyActions( $newVersion->getActions() ) ?: [ '' ] |
| 309 | ); |
| 310 | if ( $actions !== '' ) { |
| 311 | $body .= $this->getHeaderRow( 'abusefilter-edit-consequences' ) . $actions; |
| 312 | } |
| 313 | |
| 314 | $tableHead = Html::rawElement( 'thead', [], $headings ); |
| 315 | $tableBody = Html::rawElement( 'tbody', [], $body ); |
| 316 | $table = Html::rawElement( |
| 317 | 'table', |
| 318 | [ 'class' => 'wikitable' ], |
| 319 | $tableHead . $tableBody |
| 320 | ); |
| 321 | |
| 322 | return Html::rawElement( 'h2', [], $this->msg( 'abusefilter-diff-title' )->parse() ) . |
| 323 | $table; |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * @param string[][] $actions |
| 328 | * @return string[] |
| 329 | */ |
| 330 | private function stringifyActions( array $actions ): array { |
| 331 | $lines = []; |
| 332 | |
| 333 | ksort( $actions ); |
| 334 | $language = $this->getLanguage(); |
| 335 | foreach ( $actions as $action => $parameters ) { |
| 336 | $lines[] = $this->specsFormatter->formatAction( $action, $parameters, $language ); |
| 337 | } |
| 338 | |
| 339 | return $lines; |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * @param string $key |
| 344 | * @return string |
| 345 | */ |
| 346 | public function getHeaderRow( $key ) { |
| 347 | $msg = $this->msg( $key )->parse(); |
| 348 | return Html::rawElement( |
| 349 | 'tr', |
| 350 | [ 'class' => 'mw-abusefilter-diff-header' ], |
| 351 | Html::rawElement( 'th', [ 'colspan' => 3 ], $msg ) |
| 352 | ); |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * @param string $key |
| 357 | * @param array|string $old |
| 358 | * @param array|string $new |
| 359 | * @return string |
| 360 | */ |
| 361 | public function getDiffRow( $key, $old, $new ) { |
| 362 | if ( !is_array( $old ) ) { |
| 363 | $old = explode( "\n", TextContent::normalizeLineEndings( $old ) ); |
| 364 | } |
| 365 | if ( !is_array( $new ) ) { |
| 366 | $new = explode( "\n", TextContent::normalizeLineEndings( $new ) ); |
| 367 | } |
| 368 | |
| 369 | if ( $old === $new ) { |
| 370 | return ''; |
| 371 | } |
| 372 | |
| 373 | $diffEngine = new DifferenceEngine( $this->getContext() ); |
| 374 | |
| 375 | $diffEngine->showDiffStyle(); |
| 376 | |
| 377 | $diff = new Diff( $old, $new ); |
| 378 | $formatter = new TableDiffFormatterFullContext(); |
| 379 | $formattedDiff = $diffEngine->addHeader( $formatter->format( $diff ), '', '' ); |
| 380 | |
| 381 | $heading = Html::rawElement( 'th', [], $this->msg( $key )->parse() ); |
| 382 | $bodyCell = Html::rawElement( 'td', [ 'colspan' => 2 ], $formattedDiff ); |
| 383 | return Html::rawElement( |
| 384 | 'tr', |
| 385 | [], |
| 386 | $heading . $bodyCell |
| 387 | ) . "\n"; |
| 388 | } |
| 389 | } |