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| 1 | <?php |
| 2 | /* |
| 3 | * Copyright © Bryan Tong Minh, 2011 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | */ |
| 22 | |
| 23 | namespace MediaWiki\Extension\VipsScaler; |
| 24 | |
| 25 | use MediaTransformError; |
| 26 | use MediaTransformOutput; |
| 27 | use MediaWiki\Config\ConfigException; |
| 28 | use MediaWiki\Html\Html; |
| 29 | use MediaWiki\HTMLForm\HTMLForm; |
| 30 | use MediaWiki\MediaWikiServices; |
| 31 | use MediaWiki\Output\StreamFile; |
| 32 | use MediaWiki\SpecialPage\SpecialPage; |
| 33 | use MediaWiki\Status\Status; |
| 34 | use MediaWiki\Title\Title; |
| 35 | use MediaWiki\User\User; |
| 36 | use OOUI\CheckboxInputWidget; |
| 37 | use OOUI\FieldLayout; |
| 38 | use OOUI\FieldsetLayout; |
| 39 | use OOUI\HtmlSnippet; |
| 40 | use OOUI\LabelWidget; |
| 41 | use OOUI\PanelLayout; |
| 42 | use PermissionsError; |
| 43 | use Wikimedia\IPUtils; |
| 44 | |
| 45 | /** |
| 46 | * A Special page intended to test the VipsScaler. |
| 47 | * @author Bryan Tong Minh |
| 48 | */ |
| 49 | class SpecialVipsTest extends SpecialPage { |
| 50 | public function __construct() { |
| 51 | parent::__construct( 'VipsTest', 'vipsscaler-test' ); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * @inheritDoc |
| 56 | */ |
| 57 | public function userCanExecute( User $user ) { |
| 58 | global $wgVipsExposeTestPage; |
| 59 | |
| 60 | return $wgVipsExposeTestPage && parent::userCanExecute( $user ); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @inheritDoc |
| 65 | */ |
| 66 | public function displayRestrictionError() { |
| 67 | global $wgVipsExposeTestPage; |
| 68 | |
| 69 | if ( !$wgVipsExposeTestPage ) { |
| 70 | throw new PermissionsError( |
| 71 | null, |
| 72 | [ 'querypage-disabled' ] |
| 73 | ); |
| 74 | } |
| 75 | |
| 76 | parent::displayRestrictionError(); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Entry point |
| 81 | * @param string|null $par TODO describe what is expected there |
| 82 | */ |
| 83 | public function execute( $par ) { |
| 84 | $request = $this->getRequest(); |
| 85 | $this->setHeaders(); |
| 86 | |
| 87 | if ( !$this->userCanExecute( $this->getUser() ) ) { |
| 88 | $this->displayRestrictionError(); |
| 89 | } |
| 90 | |
| 91 | if ( $request->getText( 'thumb' ) ) { |
| 92 | $this->streamThumbnail(); |
| 93 | } else { |
| 94 | $this->showForm(); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | */ |
| 100 | protected function showThumbnails() { |
| 101 | $request = $this->getRequest(); |
| 102 | $this->getOutput()->enableOOUI(); |
| 103 | // Check if there is any input |
| 104 | if ( !( $request->getText( 'file' ) ) ) { |
| 105 | return; |
| 106 | } |
| 107 | |
| 108 | // Check if valid file was provided |
| 109 | $title = Title::newFromText( $request->getText( 'file' ), NS_FILE ); |
| 110 | if ( $title === null ) { |
| 111 | $this->getOutput()->addWikiMsg( 'vipsscaler-invalid-file' ); |
| 112 | return; |
| 113 | } |
| 114 | $file = MediaWikiServices::getInstance()->getRepoGroup()->findFile( $title ); |
| 115 | if ( !$file || !$file->exists() ) { |
| 116 | $this->getOutput()->addWikiMsg( 'vipsscaler-invalid-file' ); |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | // Create options |
| 121 | $width = $request->getInt( 'width' ); |
| 122 | if ( !$width ) { |
| 123 | $this->getOutput()->addWikiMsg( 'vipsscaler-invalid-width' ); |
| 124 | return; |
| 125 | } |
| 126 | $vipsUrlOptions = [ 'thumb' => $file->getName(), 'width' => $width ]; |
| 127 | if ( $request->getRawVal( 'sharpen' ) !== null ) { |
| 128 | $vipsUrlOptions['sharpen'] = $request->getFloat( 'sharpen' ); |
| 129 | } |
| 130 | if ( $request->getBool( 'bilinear' ) ) { |
| 131 | $vipsUrlOptions['bilinear'] = 1; |
| 132 | } |
| 133 | |
| 134 | // Generate normal thumbnail |
| 135 | $params = [ 'width' => $width ]; |
| 136 | $thumb = $file->transform( $params ); |
| 137 | if ( !$thumb || $thumb->isError() ) { |
| 138 | $this->getOutput()->addWikiMsg( 'vipsscaler-thumb-error' ); |
| 139 | return; |
| 140 | } |
| 141 | |
| 142 | // Check if we actually scaled the file |
| 143 | $normalThumbUrl = $thumb->getUrl(); |
| 144 | if ( wfExpandUrl( $normalThumbUrl ) == $file->getFullUrl() ) { |
| 145 | // TODO: message |
| 146 | } |
| 147 | |
| 148 | // Make url to the vips thumbnail |
| 149 | $vipsThumbUrl = $this->getPageTitle()->getLocalUrl( $vipsUrlOptions ); |
| 150 | |
| 151 | // HTML for the thumbnails |
| 152 | $thumbs = new HtmlSnippet( Html::rawElement( 'div', [ 'id' => 'mw-vipstest-thumbnails' ], |
| 153 | Html::element( 'img', [ |
| 154 | 'src' => $normalThumbUrl, |
| 155 | 'alt' => $this->msg( 'vipsscaler-default-thumb' )->text(), |
| 156 | ] ) . ' ' . |
| 157 | Html::element( 'img', [ |
| 158 | 'src' => $vipsThumbUrl, |
| 159 | 'alt' => $this->msg( 'vipsscaler-vips-thumb' )->text(), |
| 160 | ] ) |
| 161 | ) ); |
| 162 | |
| 163 | // Helper messages shown above the thumbnails rendering |
| 164 | $form = [ |
| 165 | new LabelWidget( [ 'label' => $this->msg( 'vipsscaler-thumbs-help' )->text() ] ) |
| 166 | ]; |
| 167 | |
| 168 | // A checkbox to easily alternate between both views: |
| 169 | $form[] = new FieldLayout( |
| 170 | new CheckboxInputWidget( [ |
| 171 | 'name' => 'mw-vipstest-thumbs-switch', |
| 172 | 'inputId' => 'mw-vipstest-thumbs-switch', |
| 173 | ] ), |
| 174 | [ |
| 175 | 'label' => $this->msg( 'vipsscaler-thumbs-switch-label' )->text(), |
| 176 | 'align' => 'inline', |
| 177 | 'infusable' => true, |
| 178 | ] |
| 179 | ); |
| 180 | |
| 181 | $fieldset = new FieldsetLayout( [ |
| 182 | 'label' => $this->msg( 'vipsscaler-thumbs-legend' )->text(), |
| 183 | 'items' => $form, |
| 184 | ] ); |
| 185 | |
| 186 | $this->getOutput()->addHTML( |
| 187 | new PanelLayout( [ |
| 188 | 'expanded' => false, |
| 189 | 'padded' => true, |
| 190 | 'framed' => true, |
| 191 | 'content' => [ $fieldset, $thumbs ], |
| 192 | ] ) |
| 193 | ); |
| 194 | |
| 195 | // Finally output all of the above |
| 196 | $this->getOutput()->addModules( [ 'ext.vipsscaler' ] ); |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * TODO |
| 201 | */ |
| 202 | protected function showForm() { |
| 203 | $form = HTMLForm::factory( 'ooui', $this->getFormFields(), $this->getContext() ); |
| 204 | $form->setWrapperLegend( $this->msg( 'vipsscaler-form-legend' )->text() ); |
| 205 | $form->setSubmitText( $this->msg( 'vipsscaler-form-submit' )->text() ); |
| 206 | $form->setSubmitCallback( [ __CLASS__, 'processForm' ] ); |
| 207 | $form->setMethod( 'get' ); |
| 208 | |
| 209 | // Looks like HTMLForm does not actually show the form if submission |
| 210 | // was correct. So we have to show it again. |
| 211 | // See HTMLForm::show() |
| 212 | $result = $form->show(); |
| 213 | if ( $result === true || ( $result instanceof Status && $result->isGood() ) ) { |
| 214 | $form->displayForm( $result ); |
| 215 | $this->showThumbnails(); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * [[Special:VipsTest]] form structure for HTMLForm |
| 221 | * @return array A form structure using the HTMLForm system |
| 222 | */ |
| 223 | protected function getFormFields() { |
| 224 | $fields = [ |
| 225 | 'File' => [ |
| 226 | 'name' => 'file', |
| 227 | 'class' => 'HTMLTextField', |
| 228 | 'required' => true, |
| 229 | 'size' => '80', |
| 230 | 'label-message' => 'vipsscaler-form-file', |
| 231 | 'validation-callback' => [ __CLASS__, 'validateFileInput' ], |
| 232 | ], |
| 233 | 'Width' => [ |
| 234 | 'name' => 'width', |
| 235 | 'class' => 'HTMLIntField', |
| 236 | 'default' => '640', |
| 237 | 'size' => '5', |
| 238 | 'required' => true, |
| 239 | 'label-message' => 'vipsscaler-form-width', |
| 240 | 'validation-callback' => [ __CLASS__, 'validateWidth' ], |
| 241 | ], |
| 242 | 'SharpenRadius' => [ |
| 243 | 'name' => 'sharpen', |
| 244 | 'class' => 'HTMLFloatField', |
| 245 | 'default' => '0.0', |
| 246 | 'size' => '5', |
| 247 | 'label-message' => 'vipsscaler-form-sharpen-radius', |
| 248 | 'validation-callback' => [ __CLASS__, 'validateSharpen' ], |
| 249 | ], |
| 250 | 'Bilinear' => [ |
| 251 | 'name' => 'bilinear', |
| 252 | 'class' => 'HTMLCheckField', |
| 253 | 'label-message' => 'vipsscaler-form-bilinear', |
| 254 | ], |
| 255 | ]; |
| 256 | |
| 257 | /** |
| 258 | * Match ImageMagick by default |
| 259 | */ |
| 260 | global $wgSharpenParameter; |
| 261 | if ( preg_match( '/^[0-9.]+x([0-9.]+)$/', $wgSharpenParameter, $m ) ) { |
| 262 | $fields['SharpenRadius']['default'] = $m[1]; |
| 263 | } |
| 264 | return $fields; |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * @param string|null $input |
| 269 | * @param array $alldata |
| 270 | * @return bool|string |
| 271 | */ |
| 272 | public static function validateFileInput( $input, $alldata ) { |
| 273 | if ( $input === null || !trim( $input ) ) { |
| 274 | // Don't show an error if the file is not yet specified, |
| 275 | // because it is annoying |
| 276 | return true; |
| 277 | } |
| 278 | |
| 279 | $title = Title::newFromText( $input, NS_FILE ); |
| 280 | if ( $title === null ) { |
| 281 | return wfMessage( 'vipsscaler-invalid-file' )->text(); |
| 282 | } |
| 283 | $file = MediaWikiServices::getInstance()->getRepoGroup()->findFile( $title ); |
| 284 | if ( !$file || !$file->exists() ) { |
| 285 | return wfMessage( 'vipsscaler-invalid-file' )->text(); |
| 286 | } |
| 287 | |
| 288 | // Looks sensible enough. |
| 289 | return true; |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * @param int $input |
| 294 | * @param array $allData |
| 295 | * @return bool|string |
| 296 | */ |
| 297 | public static function validateWidth( $input, $allData ) { |
| 298 | if ( self::validateFileInput( $allData['File'], $allData ) !== true |
| 299 | || $allData['File'] === null || !trim( $allData['File'] ) |
| 300 | ) { |
| 301 | // Invalid file, error will already be shown at file field |
| 302 | return true; |
| 303 | } |
| 304 | $title = Title::newFromText( $allData['File'], NS_FILE ); |
| 305 | $file = MediaWikiServices::getInstance()->getRepoGroup()->findFile( $title ); |
| 306 | if ( $input <= 0 || $input >= $file->getWidth() ) { |
| 307 | return wfMessage( 'vipsscaler-invalid-width' )->text(); |
| 308 | } |
| 309 | return true; |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * @param int $input |
| 314 | * @param array $allData |
| 315 | * @return bool|string |
| 316 | */ |
| 317 | public static function validateSharpen( $input, $allData ) { |
| 318 | if ( $input >= 5.0 || $input < 0.0 ) { |
| 319 | return wfMessage( 'vipsscaler-invalid-sharpen' )->text(); |
| 320 | } |
| 321 | return true; |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * Process data submitted by the form. |
| 326 | * @param array $data |
| 327 | * @return Status |
| 328 | */ |
| 329 | public static function processForm( array $data ) { |
| 330 | return Status::newGood(); |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * |
| 335 | */ |
| 336 | protected function streamThumbnail() { |
| 337 | global $wgVipsThumbnailerHost, $wgVipsTestExpiry; |
| 338 | |
| 339 | $request = $this->getRequest(); |
| 340 | |
| 341 | // Validate title and file existance |
| 342 | $title = Title::newFromText( $request->getText( 'thumb' ), NS_FILE ); |
| 343 | if ( $title === null ) { |
| 344 | $this->streamError( 404, "VipsScaler: invalid title\n" ); |
| 345 | return; |
| 346 | } |
| 347 | $services = MediaWikiServices::getInstance(); |
| 348 | $file = $services->getRepoGroup()->findFile( $title ); |
| 349 | if ( !$file || !$file->exists() ) { |
| 350 | $this->streamError( 404, "VipsScaler: file not found\n" ); |
| 351 | return; |
| 352 | } |
| 353 | |
| 354 | // Check if vips can handle this file |
| 355 | if ( VipsScaler::getVipsHandler( $file ) === false ) { |
| 356 | $this->streamError( 500, "VipsScaler: VIPS cannot handle this file type\n" ); |
| 357 | return; |
| 358 | } |
| 359 | |
| 360 | // Validate param string |
| 361 | $handler = $file->getHandler(); |
| 362 | $params = [ 'width' => $request->getInt( 'width' ) ]; |
| 363 | if ( !$handler->normaliseParams( $file, $params ) ) { |
| 364 | $this->streamError( 500, "VipsScaler: invalid parameters\n" ); |
| 365 | return; |
| 366 | } |
| 367 | |
| 368 | // Get the thumbnail |
| 369 | if ( $wgVipsThumbnailerHost === null || $request->getBool( 'noproxy' ) ) { |
| 370 | // No remote scaler, need to do it ourselves. |
| 371 | // Emulate the BitmapHandlerTransform hook |
| 372 | |
| 373 | $tmpFile = VipsCommand::makeTemp( $file->getExtension() ); |
| 374 | $tmpFile->bind( $this ); |
| 375 | $dstPath = $tmpFile->getPath(); |
| 376 | $dstUrl = ''; |
| 377 | wfDebug( __METHOD__ . ": Creating vips thumbnail at $dstPath\n" ); |
| 378 | |
| 379 | $scalerParams = [ |
| 380 | // The size to which the image will be resized |
| 381 | 'physicalWidth' => $params['physicalWidth'], |
| 382 | 'physicalHeight' => $params['physicalHeight'], |
| 383 | 'physicalDimensions' => "{$params['physicalWidth']}x{$params['physicalHeight']}", |
| 384 | // The size of the image on the page |
| 385 | 'clientWidth' => $params['width'], |
| 386 | 'clientHeight' => $params['height'], |
| 387 | // Comment as will be added to the EXIF of the thumbnail |
| 388 | 'comment' => isset( $params['descriptionUrl'] ) ? |
| 389 | "File source: {$params['descriptionUrl']}" : '', |
| 390 | // Properties of the original image |
| 391 | 'srcWidth' => $file->getWidth(), |
| 392 | 'srcHeight' => $file->getHeight(), |
| 393 | 'mimeType' => $file->getMimeType(), |
| 394 | 'srcPath' => $file->getLocalRefPath(), |
| 395 | 'dstPath' => $dstPath, |
| 396 | 'dstUrl' => $dstUrl, |
| 397 | 'interlace' => $request->getBool( 'interlace' ), |
| 398 | ]; |
| 399 | |
| 400 | $options = []; |
| 401 | if ( $request->getBool( 'bilinear' ) ) { |
| 402 | $options['bilinear'] = true; |
| 403 | wfDebug( __METHOD__ . ": using bilinear scaling\n" ); |
| 404 | } |
| 405 | if ( $request->getRawVal( 'sharpen' ) !== null && $request->getFloat( 'sharpen' ) < 5 ) { |
| 406 | // Limit sharpen sigma to 5, otherwise we have to write huge convolution matrices |
| 407 | $sharpen = $request->getFloat( 'sharpen' ); |
| 408 | $options['sharpen'] = [ 'sigma' => $sharpen ]; |
| 409 | wfDebug( __METHOD__ . ": sharpening with radius {$sharpen}\n" ); |
| 410 | } |
| 411 | |
| 412 | // Call the hook |
| 413 | /** @var MediaTransformOutput $mto */ |
| 414 | VipsScaler::doTransform( $handler, $file, $scalerParams, $options, $mto ); |
| 415 | if ( $mto && !$mto->isError() ) { |
| 416 | wfDebug( __METHOD__ . ": streaming thumbnail...\n" ); |
| 417 | $this->getOutput()->disable(); |
| 418 | StreamFile::stream( $dstPath, [ |
| 419 | "Cache-Control: public, max-age=$wgVipsTestExpiry, s-maxage=$wgVipsTestExpiry", |
| 420 | 'Expires: ' . gmdate( 'r ', time() + $wgVipsTestExpiry ) |
| 421 | ] ); |
| 422 | } else { |
| 423 | '@phan-var MediaTransformError $mto'; |
| 424 | $this->streamError( 500, $mto->getHtmlMsg() ); |
| 425 | } |
| 426 | |
| 427 | // Cleanup the temporary file |
| 428 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 429 | @unlink( $dstPath ); |
| 430 | |
| 431 | } else { |
| 432 | // Request the thumbnail at a remote scaler |
| 433 | $url = wfExpandUrl( $request->getRequestURL(), PROTO_INTERNAL ); |
| 434 | $url = wfAppendQuery( $url, [ 'noproxy' => '1' ] ); |
| 435 | wfDebug( __METHOD__ . ": Getting vips thumb from remote url $url\n" ); |
| 436 | |
| 437 | $bits = IPUtils::splitHostAndPort( $wgVipsThumbnailerHost ); |
| 438 | if ( !$bits ) { |
| 439 | throw new ConfigException( __METHOD__ . ': $wgVipsThumbnailerHost is not set to a valid host' ); |
| 440 | } |
| 441 | [ $host, $port ] = $bits; |
| 442 | if ( $port === false ) { |
| 443 | $port = 80; |
| 444 | } |
| 445 | $proxy = IPUtils::combineHostAndPort( $host, $port ); |
| 446 | |
| 447 | $options = [ |
| 448 | 'method' => 'GET', |
| 449 | 'proxy' => $proxy, |
| 450 | ]; |
| 451 | |
| 452 | $req = $services->getHttpRequestFactory() |
| 453 | ->create( $url, $options, __METHOD__ ); |
| 454 | $status = $req->execute(); |
| 455 | if ( $status->isOk() ) { |
| 456 | // Disable output and stream the file |
| 457 | $this->getOutput()->disable(); |
| 458 | wfResetOutputBuffers(); |
| 459 | header( 'Content-Type: ' . $file->getMimeType() ); |
| 460 | header( 'Content-Length: ' . strlen( $req->getContent() ) ); |
| 461 | header( "Cache-Control: public, max-age=$wgVipsTestExpiry, s-maxage=$wgVipsTestExpiry" ); |
| 462 | header( 'Expires: ' . gmdate( 'r ', time() + $wgVipsTestExpiry ) ); |
| 463 | print $req->getContent(); |
| 464 | } elseif ( $status->hasMessage( 'http-bad-status' ) ) { |
| 465 | $this->streamError( 500, $req->getContent() ); |
| 466 | return; |
| 467 | } else { |
| 468 | $wikitext = Status::wrap( $status )->getWikiText(); |
| 469 | $this->streamError( 500, $this->getOutput()->parseAsInterface( $wikitext ) ); |
| 470 | return; |
| 471 | } |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * Generates a blank page with given HTTP error code |
| 477 | * |
| 478 | * @param int $code HTTP error either 404 or 500 |
| 479 | * @param string $error |
| 480 | */ |
| 481 | protected function streamError( $code, $error = '' ) { |
| 482 | $output = $this->getOutput(); |
| 483 | $output->setStatusCode( $code ); |
| 484 | $output->setArticleBodyOnly( true ); |
| 485 | $output->addHTML( $error ); |
| 486 | } |
| 487 | |
| 488 | protected function getGroupName() { |
| 489 | return 'media'; |
| 490 | } |
| 491 | } |