1<?php 2/** 3 * webtrees: online genealogy 4 * Copyright (C) 2019 webtrees development team 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 3 of the License, or 8 * (at your option) any later version. 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16declare(strict_types=1); 17 18namespace Fisharebest\Webtrees; 19 20use League\Glide\Urls\UrlBuilderFactory; 21use Throwable; 22 23/** 24 * A GEDCOM media file. A media object can contain many media files, 25 * such as scans of both sides of a document, the transcript of an audio 26 * recording, etc. 27 */ 28class MediaFile 29{ 30 private const MIME_TYPES = [ 31 'bmp' => 'image/bmp', 32 'doc' => 'application/msword', 33 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 34 'ged' => 'text/x-gedcom', 35 'gif' => 'image/gif', 36 'html' => 'text/html', 37 'htm' => 'text/html', 38 'jpeg' => 'image/jpeg', 39 'jpg' => 'image/jpeg', 40 'mov' => 'video/quicktime', 41 'mp3' => 'audio/mpeg', 42 'mp4' => 'video/mp4', 43 'ogv' => 'video/ogg', 44 'pdf' => 'application/pdf', 45 'png' => 'image/png', 46 'rar' => 'application/x-rar-compressed', 47 'swf' => 'application/x-shockwave-flash', 48 'svg' => 'image/svg', 49 'tiff' => 'image/tiff', 50 'tif' => 'image/tiff', 51 'xls' => 'application/vnd-ms-excel', 52 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 53 'wmv' => 'video/x-ms-wmv', 54 'zip' => 'application/zip', 55 ]; 56 57 /** @var string The filename */ 58 private $multimedia_file_refn = ''; 59 60 /** @var string The file extension; jpeg, txt, mp4, etc. */ 61 private $multimedia_format = ''; 62 63 /** @var string The type of document; newspaper, microfiche, etc. */ 64 private $source_media_type = ''; 65 /** @var string The filename */ 66 67 /** @var string The name of the document */ 68 private $descriptive_title = ''; 69 70 /** @var Media $media The media object to which this file belongs */ 71 private $media; 72 73 /** @var string */ 74 private $fact_id; 75 76 /** 77 * Create a MediaFile from raw GEDCOM data. 78 * 79 * @param string $gedcom 80 * @param Media $media 81 */ 82 public function __construct($gedcom, Media $media) 83 { 84 $this->media = $media; 85 $this->fact_id = md5($gedcom); 86 87 if (preg_match('/^\d FILE (.+)/m', $gedcom, $match)) { 88 $this->multimedia_file_refn = $match[1]; 89 $this->multimedia_format = pathinfo($match[1], PATHINFO_EXTENSION); 90 } 91 92 if (preg_match('/^\d FORM (.+)/m', $gedcom, $match)) { 93 $this->multimedia_format = $match[1]; 94 } 95 96 if (preg_match('/^\d TYPE (.+)/m', $gedcom, $match)) { 97 $this->source_media_type = $match[1]; 98 } 99 100 if (preg_match('/^\d TITL (.+)/m', $gedcom, $match)) { 101 $this->descriptive_title = $match[1]; 102 } 103 } 104 105 /** 106 * Get the filename. 107 * 108 * @return string 109 */ 110 public function filename(): string 111 { 112 return $this->multimedia_file_refn; 113 } 114 115 /** 116 * Get the base part of the filename. 117 * 118 * @return string 119 */ 120 public function basename(): string 121 { 122 return basename($this->multimedia_file_refn); 123 } 124 125 /** 126 * Get the folder part of the filename. 127 * 128 * @return string 129 */ 130 public function dirname(): string 131 { 132 $dirname = dirname($this->multimedia_file_refn); 133 134 if ($dirname === '.') { 135 return ''; 136 } 137 138 return $dirname; 139 } 140 141 /** 142 * Get the format. 143 * 144 * @return string 145 */ 146 public function format(): string 147 { 148 return $this->multimedia_format; 149 } 150 151 /** 152 * Get the type. 153 * 154 * @return string 155 */ 156 public function type(): string 157 { 158 return $this->source_media_type; 159 } 160 161 /** 162 * Get the title. 163 * 164 * @return string 165 */ 166 public function title(): string 167 { 168 return $this->descriptive_title; 169 } 170 171 /** 172 * Get the fact ID. 173 * 174 * @return string 175 */ 176 public function factId(): string 177 { 178 return $this->fact_id; 179 } 180 181 /** 182 * @return bool 183 */ 184 public function isPendingAddition(): bool 185 { 186 foreach ($this->media->facts() as $fact) { 187 if ($fact->id() === $this->fact_id) { 188 return $fact->isPendingAddition(); 189 } 190 } 191 192 return false; 193 } 194 195 /** 196 * @return bool 197 */ 198 public function isPendingDeletion(): bool 199 { 200 foreach ($this->media->facts() as $fact) { 201 if ($fact->id() === $this->fact_id) { 202 return $fact->isPendingDeletion(); 203 } 204 } 205 206 return false; 207 } 208 209 /** 210 * Display an image-thumbnail or a media-icon, and add markup for image viewers such as colorbox. 211 * 212 * @param int $width Pixels 213 * @param int $height Pixels 214 * @param string $fit "crop" or "contain" 215 * @param string[] $attributes Additional HTML attributes 216 * 217 * @return string 218 */ 219 public function displayImage($width, $height, $fit, $attributes = []): string 220 { 221 if ($this->isExternal()) { 222 $src = $this->multimedia_file_refn; 223 $srcset = []; 224 } else { 225 // Generate multiple images for displays with higher pixel densities. 226 $src = $this->imageUrl($width, $height, $fit); 227 $srcset = []; 228 foreach ([ 229 2, 230 3, 231 4, 232 ] as $x) { 233 $srcset[] = $this->imageUrl($width * $x, $height * $x, $fit) . ' ' . $x . 'x'; 234 } 235 } 236 237 $image = '<img ' . Html::attributes($attributes + [ 238 'dir' => 'auto', 239 'src' => $src, 240 'srcset' => implode(',', $srcset), 241 'alt' => htmlspecialchars_decode(strip_tags($this->media->getFullName())), 242 ]) . '>'; 243 244 if ($this->isImage()) { 245 $attributes = Html::attributes([ 246 'class' => 'gallery', 247 'type' => $this->mimeType(), 248 'href' => $this->imageUrl(0, 0, 'contain'), 249 'data-title' => htmlspecialchars_decode(strip_tags($this->media->getFullName())), 250 ]); 251 } else { 252 $attributes = Html::attributes([ 253 'type' => $this->mimeType(), 254 'href' => $this->downloadUrl(), 255 ]); 256 } 257 258 return '<a ' . $attributes . '>' . $image . '</a>'; 259 } 260 261 /** 262 * A list of image attributes 263 * 264 * @return string[] 265 */ 266 public function attributes(): array 267 { 268 $attributes = []; 269 270 if (!$this->isExternal() || $this->fileExists()) { 271 $file = $this->folder() . $this->multimedia_file_refn; 272 273 $attributes['__FILE_SIZE__'] = $this->fileSizeKB(); 274 275 $imgsize = getimagesize($file); 276 if (is_array($imgsize) && !empty($imgsize['0'])) { 277 $attributes['__IMAGE_SIZE__'] = I18N::translate('%1$s × %2$s pixels', I18N::number($imgsize['0']), I18N::number($imgsize['1'])); 278 } 279 } 280 281 return $attributes; 282 } 283 284 /** 285 * check if the file exists on this server 286 * 287 * @return bool 288 */ 289 public function fileExists(): bool 290 { 291 return !$this->isExternal() && file_exists($this->folder() . $this->multimedia_file_refn); 292 } 293 294 /** 295 * Is the media file actually a URL? 296 */ 297 public function isExternal(): bool 298 { 299 return strpos($this->multimedia_file_refn, '://') !== false; 300 } 301 302 /** 303 * Is the media file an image? 304 */ 305 public function isImage(): bool 306 { 307 return in_array($this->extension(), [ 308 'jpeg', 309 'jpg', 310 'gif', 311 'png', 312 ]); 313 } 314 315 /** 316 * Where is the file stored on disk? 317 */ 318 public function folder(): string 319 { 320 return WT_DATA_DIR . $this->media->tree()->getPreference('MEDIA_DIRECTORY'); 321 } 322 323 /** 324 * A user-friendly view of the file size 325 * 326 * @return int 327 */ 328 private function fileSizeBytes(): int 329 { 330 try { 331 return filesize($this->folder() . $this->multimedia_file_refn); 332 } catch (Throwable $ex) { 333 return 0; 334 } 335 } 336 337 /** 338 * get the media file size in KB 339 * 340 * @return string 341 */ 342 public function fileSizeKB(): string 343 { 344 $size = $this->fileSizeBytes(); 345 $size = intdiv($size + 1023, 1024); 346 347 /* I18N: size of file in KB */ 348 return I18N::translate('%s KB', I18N::number($size)); 349 } 350 351 /** 352 * Get the filename on the server - for those (very few!) functions which actually 353 * need the filename, such as the PDF reports. 354 * 355 * @return string 356 */ 357 public function getServerFilename() 358 { 359 $MEDIA_DIRECTORY = $this->media->tree()->getPreference('MEDIA_DIRECTORY'); 360 361 if ($this->isExternal() || !$this->multimedia_file_refn) { 362 // External image, or (in the case of corrupt GEDCOM data) no image at all 363 return $this->multimedia_file_refn; 364 } 365 366 // Main image 367 return WT_DATA_DIR . $MEDIA_DIRECTORY . $this->multimedia_file_refn; 368 } 369 370 /** 371 * Generate a URL to download a non-image media file. 372 * 373 * @return string 374 */ 375 public function downloadUrl(): string 376 { 377 return route('media-download', [ 378 'xref' => $this->media->xref(), 379 'ged' => $this->media->tree()->name(), 380 'fact_id' => $this->fact_id, 381 ]); 382 } 383 384 /** 385 * Generate a URL for an image. 386 * 387 * @param int $width Maximum width in pixels 388 * @param int $height Maximum height in pixels 389 * @param string $fit "crop" or "contain" 390 * 391 * @return string 392 */ 393 public function imageUrl($width, $height, $fit): string 394 { 395 // Sign the URL, to protect against mass-resize attacks. 396 $glide_key = Site::getPreference('glide-key'); 397 if (empty($glide_key)) { 398 $glide_key = bin2hex(random_bytes(128)); 399 Site::setPreference('glide-key', $glide_key); 400 } 401 402 if (Auth::accessLevel($this->media->tree()) > $this->media->tree()->getPreference('SHOW_NO_WATERMARK')) { 403 $mark = 'watermark.png'; 404 } else { 405 $mark = ''; 406 } 407 408 $url_builder = UrlBuilderFactory::create(WT_BASE_URL, $glide_key); 409 410 $url = $url_builder->getUrl('index.php', [ 411 'route' => 'media-thumbnail', 412 'xref' => $this->media->xref(), 413 'ged' => $this->media->tree()->name(), 414 'fact_id' => $this->fact_id, 415 'w' => $width, 416 'h' => $height, 417 'fit' => $fit, 418 'mark' => $mark, 419 'markh' => '100h', 420 'markw' => '100w', 421 'markalpha' => 25, 422 'or' => 0, 423 // Intervention uses exif_read_data() which is very buggy. 424 ]); 425 426 return $url; 427 } 428 429 /** 430 * What file extension is used by this file? 431 * 432 * @return string 433 */ 434 public function extension() 435 { 436 if (preg_match('/\.([a-zA-Z0-9]+)$/', $this->multimedia_file_refn, $match)) { 437 return strtolower($match[1]); 438 } 439 440 return ''; 441 } 442 443 /** 444 * What is the mime-type of this object? 445 * For simplicity and efficiency, use the extension, rather than the contents. 446 * 447 * @return string 448 */ 449 public function mimeType(): string 450 { 451 return self::MIME_TYPES[$this->extension()] ?? 'application/octet-stream'; 452 } 453} 454