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| 1 | <?php |
| 2 | /** |
| 3 | * Helper functions for the Page Forms extension. |
| 4 | * |
| 5 | * @author Yaron Koren |
| 6 | * @file |
| 7 | * @ingroup PF |
| 8 | */ |
| 9 | |
| 10 | use MediaWiki\Linker\LinkRenderer; |
| 11 | use MediaWiki\Linker\LinkTarget; |
| 12 | use MediaWiki\MediaWikiServices; |
| 13 | use MediaWiki\Revision\RevisionRecord; |
| 14 | use Wikimedia\Rdbms\DBConnRef; |
| 15 | use Wikimedia\Rdbms\IDatabase; |
| 16 | |
| 17 | class PFUtils { |
| 18 | |
| 19 | /** |
| 20 | * Get a content language object. |
| 21 | * |
| 22 | * @return Language |
| 23 | */ |
| 24 | public static function getContLang() { |
| 25 | return MediaWikiServices::getInstance()->getContentLanguage(); |
| 26 | } |
| 27 | |
| 28 | public static function getSMWContLang() { |
| 29 | if ( function_exists( 'smwfContLang' ) ) { |
| 30 | // SMW 3.2+ |
| 31 | return smwfContLang(); |
| 32 | } else { |
| 33 | global $smwgContLang; |
| 34 | return $smwgContLang; |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Get a parser object. |
| 40 | * |
| 41 | * @return Parser |
| 42 | */ |
| 43 | public static function getParser() { |
| 44 | return MediaWikiServices::getInstance()->getParser(); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Creates a link to a special page, using that page's top-level description as the link text. |
| 49 | * @param LinkRenderer $linkRenderer |
| 50 | * @param string $specialPageName |
| 51 | * @return string |
| 52 | */ |
| 53 | public static function linkForSpecialPage( $linkRenderer, $specialPageName ) { |
| 54 | $specialPage = self::getSpecialPage( $specialPageName ); |
| 55 | return $linkRenderer->makeKnownLink( $specialPage->getPageTitle(), |
| 56 | htmlspecialchars( $specialPage->getDescription() ) ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @param LinkRenderer $linkRenderer |
| 61 | * @param LinkTarget|Title $title |
| 62 | * @param string|null $msg Must already be HTML escaped |
| 63 | * @param array $attrs link attributes |
| 64 | * @param array $params query parameters |
| 65 | * |
| 66 | * @return string HTML link |
| 67 | * |
| 68 | * Copied from CargoUtils::makeLink(). |
| 69 | */ |
| 70 | public static function makeLink( $linkRenderer, $title, $msg = null, $attrs = [], $params = [] ) { |
| 71 | global $wgTitle; |
| 72 | |
| 73 | if ( $title === null ) { |
| 74 | return null; |
| 75 | } elseif ( $wgTitle !== null && $title->equals( $wgTitle ) ) { |
| 76 | // Display bolded text instead of a link. |
| 77 | return Linker::makeSelfLinkObj( $title, $msg ); |
| 78 | } else { |
| 79 | $html = ( $msg == null ) ? null : new HtmlArmor( $msg ); |
| 80 | return $linkRenderer->makeLink( $title, $html, $attrs, $params ); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Creates the name of the page that appears in the URL; |
| 86 | * this method is necessary because Title::getPartialURL(), for |
| 87 | * some reason, doesn't include the namespace |
| 88 | * @param Title $title |
| 89 | * @return string |
| 90 | */ |
| 91 | public static function titleURLString( $title ) { |
| 92 | $namespace = $title->getNsText(); |
| 93 | if ( $namespace !== '' ) { |
| 94 | $namespace .= ':'; |
| 95 | } |
| 96 | if ( self::isCapitalized( $title->getNamespace() ) ) { |
| 97 | return $namespace . self::getContLang()->ucfirst( $title->getPartialURL() ); |
| 98 | } else { |
| 99 | return $namespace . $title->getPartialURL(); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Gets the text contents of a page with the passed-in Title object. |
| 105 | * @param Title $title |
| 106 | * @param int $audience |
| 107 | * @return string|null |
| 108 | */ |
| 109 | public static function getPageText( $title, $audience = RevisionRecord::FOR_PUBLIC ) { |
| 110 | $wikiPage = MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $title ); |
| 111 | $content = $wikiPage->getContent( $audience ); |
| 112 | if ( $content instanceof TextContent ) { |
| 113 | return $content->getText(); |
| 114 | } else { |
| 115 | return null; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | public static function getSpecialPage( $pageName ) { |
| 120 | return MediaWikiServices::getInstance() |
| 121 | ->getSpecialPageFactory() |
| 122 | ->getPage( $pageName ); |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Helper function to get the SMW data store, if SMW is installed. |
| 127 | * @return Store|null |
| 128 | */ |
| 129 | public static function getSMWStore() { |
| 130 | if ( class_exists( '\SMW\StoreFactory' ) ) { |
| 131 | return \SMW\StoreFactory::getStore(); |
| 132 | } else { |
| 133 | return null; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Creates wiki-text for a link to a wiki page |
| 139 | * @param int $namespace |
| 140 | * @param string $name |
| 141 | * @param string|null $text |
| 142 | * @return string |
| 143 | */ |
| 144 | public static function linkText( $namespace, $name, $text = null ) { |
| 145 | $title = Title::makeTitleSafe( $namespace, $name ); |
| 146 | if ( $title === null ) { |
| 147 | // TODO maybe report an error here? |
| 148 | return $name; |
| 149 | } |
| 150 | if ( $text === null ) { |
| 151 | return '[[:' . $title->getPrefixedText() . '|' . $name . ']]'; |
| 152 | } else { |
| 153 | return '[[:' . $title->getPrefixedText() . '|' . $text . ']]'; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Returns a hidden mini-form to be printed at the bottom of various helper |
| 159 | * forms, like Special:CreateForm, so that the main form can either save or |
| 160 | * preview the resulting page. |
| 161 | * |
| 162 | * @param string $title |
| 163 | * @param string $page_contents |
| 164 | * @param string $edit_summary |
| 165 | * @param bool $is_save |
| 166 | * @param User $user |
| 167 | * @return string |
| 168 | */ |
| 169 | public static function printRedirectForm( |
| 170 | $title, |
| 171 | $page_contents, |
| 172 | $edit_summary, |
| 173 | $is_save, |
| 174 | $user |
| 175 | ) { |
| 176 | global $wgPageFormsScriptPath; |
| 177 | |
| 178 | if ( $is_save ) { |
| 179 | $action = "wpSave"; |
| 180 | } else { |
| 181 | $action = "wpPreview"; |
| 182 | } |
| 183 | |
| 184 | $text = <<<END |
| 185 | <p style="position: absolute; left: 45%; top: 45%;"><img src="$wgPageFormsScriptPath/skins/loading.gif" /></p> |
| 186 | |
| 187 | END; |
| 188 | $form_body = Html::hidden( 'wpTextbox1', $page_contents ); |
| 189 | $form_body .= Html::hidden( 'wpUnicodeCheck', 'ℳ𝒲♥𝓊𝓃𝒾𝒸ℴ𝒹ℯ' ); |
| 190 | $form_body .= Html::hidden( 'wpSummary', $edit_summary ); |
| 191 | // @TODO - add this in at some point. |
| 192 | //$form_body .= Html::hidden( 'editRevId', $edit_rev_id ); |
| 193 | |
| 194 | $userIsRegistered = $user->isRegistered(); |
| 195 | if ( $userIsRegistered ) { |
| 196 | $edit_token = $user->getEditToken(); |
| 197 | } else { |
| 198 | $edit_token = \MediaWiki\Session\Token::SUFFIX; |
| 199 | } |
| 200 | $form_body .= Html::hidden( 'wpEditToken', $edit_token ); |
| 201 | $form_body .= Html::hidden( $action, null ); |
| 202 | |
| 203 | $form_body .= Html::hidden( 'wpUltimateParam', true ); |
| 204 | |
| 205 | $text .= Html::rawElement( |
| 206 | 'form', |
| 207 | [ |
| 208 | 'id' => 'editform', |
| 209 | 'name' => 'editform', |
| 210 | 'method' => 'post', |
| 211 | 'action' => $title instanceof Title ? $title->getLocalURL( 'action=submit' ) : $title |
| 212 | ], |
| 213 | $form_body |
| 214 | ); |
| 215 | |
| 216 | $script = <<<END |
| 217 | window.onload = function() { |
| 218 | document.editform.submit(); |
| 219 | } |
| 220 | |
| 221 | END; |
| 222 | |
| 223 | $nonce = RequestContext::getMain()->getOutput()->getCSP()->getNonce(); |
| 224 | $text .= Html::inlineScript( $script, $nonce ); |
| 225 | |
| 226 | // @TODO - remove this hook? It seems useless. |
| 227 | MediaWikiServices::getInstance()->getHookContainer()->run( 'PageForms::PrintRedirectForm', [ $is_save, !$is_save, false, &$text ] ); |
| 228 | return $text; |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * Includes the necessary ResourceLoader modules for the form |
| 233 | * to display and work correctly. |
| 234 | * |
| 235 | * Accepts an optional Parser instance, or uses $wgOut if omitted. |
| 236 | * @param Parser|null $parser |
| 237 | */ |
| 238 | public static function addFormRLModules( $parser = null ) { |
| 239 | global $wgOut, $wgPageFormsSimpleUpload; |
| 240 | |
| 241 | // Handling depends on whether or not this form is embedded |
| 242 | // in another page. |
| 243 | if ( !$parser ) { |
| 244 | $wgOut->addMeta( 'robots', 'noindex,nofollow' ); |
| 245 | $output = $wgOut; |
| 246 | } else { |
| 247 | $output = $parser->getOutput(); |
| 248 | } |
| 249 | |
| 250 | $mainModules = [ |
| 251 | 'ext.pageforms.main', |
| 252 | 'ext.pageforms.submit', |
| 253 | 'ext.smw.tooltips', |
| 254 | // @TODO - the inclusion of modules for specific |
| 255 | // form inputs is wasteful, and should be removed - |
| 256 | // it should only be done as needed for each input. |
| 257 | // Unfortunately the use of multiple-instance |
| 258 | // templates makes that tricky (every form input needs |
| 259 | // to re-apply the JS on a new instance) - it can be |
| 260 | // done via JS hooks, but it hasn't been done yet. |
| 261 | 'ext.pageforms.jstree', |
| 262 | 'ext.pageforms.imagepreview', |
| 263 | 'ext.pageforms.autogrow', |
| 264 | 'ext.pageforms.checkboxes', |
| 265 | 'ext.pageforms.select2', |
| 266 | 'ext.pageforms.rating', |
| 267 | 'ext.pageforms.popupformedit', |
| 268 | 'ext.pageforms.fullcalendar', |
| 269 | 'jquery.makeCollapsible' |
| 270 | ]; |
| 271 | |
| 272 | $mainModuleStyles = [ |
| 273 | 'ext.pageforms.main.styles', |
| 274 | 'ext.pageforms.submit.styles', |
| 275 | "ext.pageforms.checkboxes.styles", |
| 276 | 'ext.pageforms.select2.styles', |
| 277 | 'ext.pageforms.rating.styles', |
| 278 | "ext.pageforms.forminput.styles" |
| 279 | ]; |
| 280 | |
| 281 | if ( $wgPageFormsSimpleUpload ) { |
| 282 | $mainModules[] = 'ext.pageforms.simpleupload'; |
| 283 | } |
| 284 | |
| 285 | $output->addModules( $mainModules ); |
| 286 | $output->addModuleStyles( $mainModuleStyles ); |
| 287 | |
| 288 | $otherModules = []; |
| 289 | MediaWikiServices::getInstance()->getHookContainer()->run( 'PageForms::AddRLModules', [ &$otherModules ] ); |
| 290 | // @phan-suppress-next-line PhanEmptyForeach |
| 291 | foreach ( $otherModules as $rlModule ) { |
| 292 | $output->addModules( $rlModule ); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Returns an array of all form names on this wiki. |
| 298 | * @return string[] |
| 299 | */ |
| 300 | public static function getAllForms() { |
| 301 | $dbr = self::getReadDB(); |
| 302 | $res = $dbr->select( 'page', |
| 303 | 'page_title', |
| 304 | [ 'page_namespace' => PF_NS_FORM, |
| 305 | 'page_is_redirect' => false ], |
| 306 | __METHOD__, |
| 307 | [ 'ORDER BY' => 'page_title' ] ); |
| 308 | $form_names = []; |
| 309 | while ( $row = $res->fetchRow() ) { |
| 310 | $form_names[] = str_replace( '_', ' ', $row[0] ); |
| 311 | } |
| 312 | $res->free(); |
| 313 | if ( count( $form_names ) == 0 ) { |
| 314 | // This case requires special handling in the UI. |
| 315 | throw new MWException( wfMessage( 'pf-noforms-error' )->parse() ); |
| 316 | } |
| 317 | return $form_names; |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * A helper function, used by getFormTagComponents(). |
| 322 | * @param string $s |
| 323 | * @return string |
| 324 | */ |
| 325 | public static function convertBackToPipes( $s ) { |
| 326 | return str_replace( "\1", '|', $s ); |
| 327 | } |
| 328 | |
| 329 | /** |
| 330 | * Splits the contents of a tag in a form definition based on pipes, |
| 331 | * but does not split on pipes that are contained within additional |
| 332 | * curly brackets, in case the tag contains any calls to parser |
| 333 | * functions or templates. |
| 334 | * @param string $string |
| 335 | * @return string[] |
| 336 | */ |
| 337 | static function smartSplitFormTag( $string ) { |
| 338 | if ( $string == '' ) { |
| 339 | return []; |
| 340 | } |
| 341 | |
| 342 | $delimiter = '|'; |
| 343 | $returnValues = []; |
| 344 | $numOpenCurlyBrackets = 0; |
| 345 | $curReturnValue = ''; |
| 346 | |
| 347 | for ( $i = 0; $i < strlen( $string ); $i++ ) { |
| 348 | $curChar = $string[$i]; |
| 349 | if ( $curChar == '{' ) { |
| 350 | $numOpenCurlyBrackets++; |
| 351 | } elseif ( $curChar == '}' ) { |
| 352 | $numOpenCurlyBrackets--; |
| 353 | } |
| 354 | |
| 355 | if ( $curChar == $delimiter && $numOpenCurlyBrackets == 0 ) { |
| 356 | $returnValues[] = trim( $curReturnValue ); |
| 357 | $curReturnValue = ''; |
| 358 | } else { |
| 359 | $curReturnValue .= $curChar; |
| 360 | } |
| 361 | } |
| 362 | $returnValues[] = trim( $curReturnValue ); |
| 363 | |
| 364 | return $returnValues; |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * This function is basically equivalent to calling |
| 369 | * explode( '|', $str ), except that it doesn't split on pipes |
| 370 | * that are within parser function calls - i.e., pipes within |
| 371 | * double curly brackets. |
| 372 | * @param string $str |
| 373 | * @return string[] |
| 374 | */ |
| 375 | public static function getFormTagComponents( $str ) { |
| 376 | // Turn each pipe within double curly brackets into another, |
| 377 | // unused character (here, "\1"), then do the explode, then |
| 378 | // convert them back. |
| 379 | // regex adapted from: |
| 380 | // https://www.regular-expressions.info/recurse.html |
| 381 | $pattern = '/{{(?>[^{}]|(?R))*?}}/'; |
| 382 | // needed to fix highlighting - <? |
| 383 | // Remove HTML comments |
| 384 | $str = preg_replace( '/<!--.*?-->/s', '', $str ); |
| 385 | $str = preg_replace_callback( $pattern, static function ( $match ) { |
| 386 | $hasPipe = strpos( $match[0], '|' ); |
| 387 | return $hasPipe ? str_replace( "|", "\1", $match[0] ) : $match[0]; |
| 388 | }, $str ); |
| 389 | return array_map( [ 'PFUtils', 'convertBackToPipes' ], self::smartSplitFormTag( $str ) ); |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * Gets the word in the wiki's language for either the value 'yes' or |
| 394 | * 'no'. |
| 395 | * @param bool $isYes |
| 396 | * @return string |
| 397 | */ |
| 398 | public static function getWordForYesOrNo( $isYes ) { |
| 399 | // @TODO - should Page Forms define these messages itself? |
| 400 | $message = $isYes ? 'htmlform-yes' : 'htmlform-no'; |
| 401 | return wfMessage( $message )->inContentLanguage()->text(); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * array_merge_recursive merges arrays, but it converts values with duplicate |
| 406 | * keys to arrays rather than overwriting the value in the first array with the duplicate |
| 407 | * value in the second array, as array_merge does. |
| 408 | * |
| 409 | * arrayMergeRecursiveDistinct() does not change the datatypes of the values in the arrays. |
| 410 | * Matching keys' values in the second array overwrite those in the first array. |
| 411 | * |
| 412 | * Parameters are passed by reference, though only for performance reasons. They're not |
| 413 | * altered by this function. |
| 414 | * |
| 415 | * See http://www.php.net/manual/en/function.array-merge-recursive.php#92195 |
| 416 | * |
| 417 | * @param array &$array1 |
| 418 | * @param array &$array2 |
| 419 | * @return array |
| 420 | * @author Daniel <daniel (at) danielsmedegaardbuus (dot) dk> |
| 421 | * @author Gabriel Sobrinho <gabriel (dot) sobrinho (at) gmail (dot) com> |
| 422 | */ |
| 423 | public static function arrayMergeRecursiveDistinct( array &$array1, array &$array2 ) { |
| 424 | $merged = $array1; |
| 425 | |
| 426 | foreach ( $array2 as $key => &$value ) { |
| 427 | if ( is_array( $value ) && isset( $merged[$key] ) && is_array( $merged[$key] ) ) { |
| 428 | $merged[$key] = self::arrayMergeRecursiveDistinct( $merged[$key], $value ); |
| 429 | } else { |
| 430 | $merged[$key] = $value; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | return $merged; |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * Return whether to "ignore" (treat as a non-form) a form with this |
| 439 | * name, based on whether it matches any of the specified text patterns. |
| 440 | * |
| 441 | * @param string $formName |
| 442 | * @return bool |
| 443 | */ |
| 444 | public static function ignoreFormName( $formName ) { |
| 445 | global $wgPageFormsIgnoreTitlePattern; |
| 446 | |
| 447 | if ( !is_array( $wgPageFormsIgnoreTitlePattern ) ) { |
| 448 | $wgPageFormsIgnoreTitlePattern = [ $wgPageFormsIgnoreTitlePattern ]; |
| 449 | } |
| 450 | |
| 451 | foreach ( $wgPageFormsIgnoreTitlePattern as $pattern ) { |
| 452 | if ( preg_match( '/' . $pattern . '/', $formName ) ) { |
| 453 | return true; |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | return false; |
| 458 | } |
| 459 | |
| 460 | public static function isCapitalized( $index ) { |
| 461 | return MediaWikiServices::getInstance() |
| 462 | ->getNamespaceInfo() |
| 463 | ->isCapitalized( $index ); |
| 464 | } |
| 465 | |
| 466 | public static function getCanonicalName( $index ) { |
| 467 | return MediaWikiServices::getInstance() |
| 468 | ->getNamespaceInfo() |
| 469 | ->getCanonicalName( $index ); |
| 470 | } |
| 471 | |
| 472 | public static function isTranslateEnabled() { |
| 473 | return ExtensionRegistry::getInstance()->isLoaded( 'Translate' ); |
| 474 | } |
| 475 | |
| 476 | public static function getCargoFieldDescription( $cargoTable, $cargoField ) { |
| 477 | try { |
| 478 | $tableSchemas = CargoUtils::getTableSchemas( [ $cargoTable ] ); |
| 479 | } catch ( MWException $e ) { |
| 480 | return null; |
| 481 | } |
| 482 | if ( !array_key_exists( $cargoTable, $tableSchemas ) ) { |
| 483 | return null; |
| 484 | } |
| 485 | $tableSchema = $tableSchemas[$cargoTable]; |
| 486 | return $tableSchema->mFieldDescriptions[$cargoField] ?? null; |
| 487 | } |
| 488 | |
| 489 | /** |
| 490 | * Provides database for read access |
| 491 | * |
| 492 | * @return IDatabase|DBConnRef |
| 493 | */ |
| 494 | public static function getReadDB() { |
| 495 | $lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory(); |
| 496 | if ( method_exists( $lbFactory, 'getReplicaDatabase' ) ) { |
| 497 | // MW 1.40+ |
| 498 | // The correct type \Wikimedia\Rdbms\IReadableDatabase cannot be used |
| 499 | // as the return type, as that class only exists since 1.40. |
| 500 | // @phan-suppress-next-line PhanTypeMismatchReturnSuperType |
| 501 | return $lbFactory->getReplicaDatabase(); |
| 502 | } else { |
| 503 | return $lbFactory->getMainLB()->getConnection( DB_REPLICA ); |
| 504 | } |
| 505 | } |
| 506 | } |