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https://github.com/BookStackApp/BookStack.git
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266 lines
8.9 KiB
PHP
266 lines
8.9 KiB
PHP
<?php namespace BookStack\Services;
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use BookStack\Exceptions\ImageUploadException;
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use BookStack\Image;
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use BookStack\User;
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use Exception;
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use Intervention\Image\Exception\NotSupportedException;
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use Intervention\Image\ImageManager;
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use Illuminate\Contracts\Filesystem\Factory as FileSystem;
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use Illuminate\Contracts\Filesystem\Filesystem as FileSystemInstance;
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use Illuminate\Contracts\Cache\Repository as Cache;
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use Symfony\Component\HttpFoundation\File\UploadedFile;
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class ImageService extends UploadService
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{
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protected $imageTool;
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protected $cache;
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protected $storageUrl;
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/**
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* ImageService constructor.
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* @param $imageTool
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* @param $fileSystem
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* @param $cache
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*/
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public function __construct(ImageManager $imageTool, FileSystem $fileSystem, Cache $cache)
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{
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$this->imageTool = $imageTool;
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$this->cache = $cache;
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parent::__construct($fileSystem);
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}
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/**
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* Saves a new image from an upload.
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* @param UploadedFile $uploadedFile
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* @param string $type
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* @param int $uploadedTo
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* @return mixed
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* @throws ImageUploadException
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*/
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public function saveNewFromUpload(UploadedFile $uploadedFile, $type, $uploadedTo = 0)
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{
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$imageName = $uploadedFile->getClientOriginalName();
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$imageData = file_get_contents($uploadedFile->getRealPath());
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return $this->saveNew($imageName, $imageData, $type, $uploadedTo);
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}
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/**
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* Gets an image from url and saves it to the database.
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* @param $url
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* @param string $type
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* @param bool|string $imageName
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* @return mixed
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* @throws \Exception
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*/
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private function saveNewFromUrl($url, $type, $imageName = false)
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{
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$imageName = $imageName ? $imageName : basename($url);
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$imageData = file_get_contents($url);
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if($imageData === false) throw new \Exception('Cannot get image from ' . $url);
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return $this->saveNew($imageName, $imageData, $type);
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}
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/**
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* Saves a new image
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* @param string $imageName
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* @param string $imageData
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* @param string $type
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* @param int $uploadedTo
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* @return Image
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* @throws ImageUploadException
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*/
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private function saveNew($imageName, $imageData, $type, $uploadedTo = 0)
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{
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$storage = $this->getStorage();
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$secureUploads = setting('app-secure-images');
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$imageName = str_replace(' ', '-', $imageName);
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if ($secureUploads) $imageName = str_random(16) . '-' . $imageName;
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$imagePath = '/uploads/images/' . $type . '/' . Date('Y-m-M') . '/';
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if ($this->isLocal()) $imagePath = '/public' . $imagePath;
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while ($storage->exists($imagePath . $imageName)) {
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$imageName = str_random(3) . $imageName;
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}
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$fullPath = $imagePath . $imageName;
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try {
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$storage->put($fullPath, $imageData);
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$storage->setVisibility($fullPath, 'public');
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} catch (Exception $e) {
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throw new ImageUploadException('Image Path ' . $fullPath . ' is not writable by the server.');
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}
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if ($this->isLocal()) $fullPath = str_replace_first('/public', '', $fullPath);
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$imageDetails = [
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'name' => $imageName,
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'path' => $fullPath,
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'url' => $this->getPublicUrl($fullPath),
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'type' => $type,
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'uploaded_to' => $uploadedTo
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];
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if (user()->id !== 0) {
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$userId = user()->id;
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$imageDetails['created_by'] = $userId;
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$imageDetails['updated_by'] = $userId;
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}
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$image = Image::forceCreate($imageDetails);
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return $image;
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}
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/**
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* Get the storage path, Dependant of storage type.
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* @param Image $image
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* @return mixed|string
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*/
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protected function getPath(Image $image)
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{
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return ($this->isLocal()) ? ('public/' . $image->path) : $image->path;
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}
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/**
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* Get the thumbnail for an image.
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* If $keepRatio is true only the width will be used.
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* Checks the cache then storage to avoid creating / accessing the filesystem on every check.
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*
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* @param Image $image
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* @param int $width
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* @param int $height
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* @param bool $keepRatio
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* @return string
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* @throws Exception
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* @throws ImageUploadException
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*/
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public function getThumbnail(Image $image, $width = 220, $height = 220, $keepRatio = false)
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{
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$thumbDirName = '/' . ($keepRatio ? 'scaled-' : 'thumbs-') . $width . '-' . $height . '/';
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$imagePath = $this->getPath($image);
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$thumbFilePath = dirname($imagePath) . $thumbDirName . basename($imagePath);
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if ($this->cache->has('images-' . $image->id . '-' . $thumbFilePath) && $this->cache->get('images-' . $thumbFilePath)) {
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return $this->getPublicUrl($thumbFilePath);
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}
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$storage = $this->getStorage();
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if ($storage->exists($thumbFilePath)) {
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return $this->getPublicUrl($thumbFilePath);
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}
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try {
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$thumb = $this->imageTool->make($storage->get($imagePath));
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} catch (Exception $e) {
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if ($e instanceof \ErrorException || $e instanceof NotSupportedException) {
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throw new ImageUploadException('The server cannot create thumbnails. Please check you have the GD PHP extension installed.');
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} else {
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throw $e;
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}
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}
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if ($keepRatio) {
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$thumb->resize($width, null, function ($constraint) {
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$constraint->aspectRatio();
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$constraint->upsize();
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});
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} else {
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$thumb->fit($width, $height);
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}
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$thumbData = (string)$thumb->encode();
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$storage->put($thumbFilePath, $thumbData);
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$storage->setVisibility($thumbFilePath, 'public');
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$this->cache->put('images-' . $image->id . '-' . $thumbFilePath, $thumbFilePath, 60 * 72);
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return $this->getPublicUrl($thumbFilePath);
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}
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/**
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* Destroys an Image object along with its files and thumbnails.
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* @param Image $image
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* @return bool
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*/
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public function destroyImage(Image $image)
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{
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$storage = $this->getStorage();
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$imageFolder = dirname($this->getPath($image));
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$imageFileName = basename($this->getPath($image));
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$allImages = collect($storage->allFiles($imageFolder));
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$imagesToDelete = $allImages->filter(function ($imagePath) use ($imageFileName) {
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$expectedIndex = strlen($imagePath) - strlen($imageFileName);
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return strpos($imagePath, $imageFileName) === $expectedIndex;
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});
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$storage->delete($imagesToDelete->all());
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// Cleanup of empty folders
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foreach ($storage->directories($imageFolder) as $directory) {
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if ($this->isFolderEmpty($directory)) $storage->deleteDirectory($directory);
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}
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if ($this->isFolderEmpty($imageFolder)) $storage->deleteDirectory($imageFolder);
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$image->delete();
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return true;
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}
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/**
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* Save a gravatar image and set a the profile image for a user.
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* @param User $user
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* @param int $size
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* @return mixed
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*/
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public function saveUserGravatar(User $user, $size = 500)
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{
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$emailHash = md5(strtolower(trim($user->email)));
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$url = 'https://www.gravatar.com/avatar/' . $emailHash . '?s=' . $size . '&d=identicon';
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$imageName = str_replace(' ', '-', $user->name . '-gravatar.png');
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$image = $this->saveNewFromUrl($url, 'user', $imageName);
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$image->created_by = $user->id;
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$image->updated_by = $user->id;
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$image->save();
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return $image;
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}
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/**
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* Gets a public facing url for an image by checking relevant environment variables.
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* @param string $filePath
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* @return string
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*/
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private function getPublicUrl($filePath)
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{
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if ($this->storageUrl === null) {
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$storageUrl = config('filesystems.url');
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// Get the standard public s3 url if s3 is set as storage type
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// Uses the nice, short URL if bucket name has no periods in otherwise the longer
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// region-based url will be used to prevent http issues.
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if ($storageUrl == false && config('filesystems.default') === 's3') {
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$storageDetails = config('filesystems.disks.s3');
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if (strpos($storageDetails['bucket'], '.') === false) {
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$storageUrl = 'https://' . $storageDetails['bucket'] . '.s3.amazonaws.com';
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} else {
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$storageUrl = 'https://s3-' . $storageDetails['region'] . '.amazonaws.com/' . $storageDetails['bucket'];
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}
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}
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$this->storageUrl = $storageUrl;
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}
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if ($this->isLocal()) $filePath = str_replace_first('public/', '', $filePath);
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return ($this->storageUrl == false ? rtrim(baseUrl(''), '/') : rtrim($this->storageUrl, '/')) . $filePath;
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}
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}
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