mirror of
https://github.com/BookStackApp/BookStack.git
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4b0c4e621a
Also changed up how base URL setting was being done by manipulating incoming request URLs instead of altering then on generation.
481 lines
15 KiB
PHP
481 lines
15 KiB
PHP
<?php namespace BookStack\Uploads;
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use BookStack\Auth\User;
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use BookStack\Exceptions\HttpFetchException;
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use BookStack\Exceptions\ImageUploadException;
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use DB;
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use Exception;
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use Illuminate\Contracts\Cache\Repository as Cache;
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use Illuminate\Contracts\Filesystem\Factory as FileSystem;
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use Intervention\Image\Exception\NotSupportedException;
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use Intervention\Image\ImageManager;
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use phpDocumentor\Reflection\Types\Integer;
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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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protected $image;
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protected $http;
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/**
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* ImageService constructor.
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* @param Image $image
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* @param ImageManager $imageTool
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* @param FileSystem $fileSystem
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* @param Cache $cache
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* @param HttpFetcher $http
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*/
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public function __construct(Image $image, ImageManager $imageTool, FileSystem $fileSystem, Cache $cache, HttpFetcher $http)
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{
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$this->image = $image;
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$this->imageTool = $imageTool;
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$this->cache = $cache;
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$this->http = $http;
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parent::__construct($fileSystem);
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}
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/**
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* Get the storage that will be used for storing images.
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* @param string $type
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* @return \Illuminate\Contracts\Filesystem\Filesystem
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*/
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protected function getStorage($type = '')
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{
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$storageType = config('filesystems.images');
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// Ensure system images (App logo) are uploaded to a public space
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if ($type === 'system' && $storageType === 'local_secure') {
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$storageType = 'local';
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}
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return $this->fileSystem->disk($storageType);
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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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* @param int|null $resizeWidth
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* @param int|null $resizeHeight
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* @param bool $keepRatio
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* @return mixed
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* @throws ImageUploadException
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*/
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public function saveNewFromUpload(
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UploadedFile $uploadedFile,
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string $type,
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int $uploadedTo = 0,
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int $resizeWidth = null,
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int $resizeHeight = null,
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bool $keepRatio = true
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) {
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$imageName = $uploadedFile->getClientOriginalName();
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$imageData = file_get_contents($uploadedFile->getRealPath());
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if ($resizeWidth !== null || $resizeHeight !== null) {
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$imageData = $this->resizeImage($imageData, $resizeWidth, $resizeHeight, $keepRatio);
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}
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return $this->saveNew($imageName, $imageData, $type, $uploadedTo);
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}
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/**
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* Save a new image from a uri-encoded base64 string of data.
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* @param string $base64Uri
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* @param string $name
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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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public function saveNewFromBase64Uri(string $base64Uri, string $name, string $type, $uploadedTo = 0)
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{
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$splitData = explode(';base64,', $base64Uri);
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if (count($splitData) < 2) {
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throw new ImageUploadException("Invalid base64 image data provided");
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}
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$data = base64_decode($splitData[1]);
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return $this->saveNew($name, $data, $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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try {
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$imageData = $this->http->fetch($url);
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} catch (HttpFetchException $exception) {
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throw new \Exception(trans('errors.cannot_get_image_from_url', ['url' => $url]));
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}
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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 = $this->getStorage($type);
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$secureUploads = setting('app-secure-images');
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$imageName = str_replace(' ', '-', $imageName);
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$imagePath = '/uploads/images/' . $type . '/' . Date('Y-m') . '/';
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while ($storage->exists($imagePath . $imageName)) {
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$imageName = str_random(3) . $imageName;
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}
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$fullPath = $imagePath . $imageName;
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if ($secureUploads) {
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$fullPath = $imagePath . str_random(16) . '-' . $imageName;
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}
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try {
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$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(trans('errors.path_not_writable', ['filePath' => $fullPath]));
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}
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$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 = $this->image->newInstance();
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$image->forceFill($imageDetails)->save();
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return $image;
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}
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/**
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* Checks if the image is a gif. Returns true if it is, else false.
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* @param Image $image
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* @return boolean
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*/
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protected function isGif(Image $image)
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{
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return strtolower(pathinfo($image->path, PATHINFO_EXTENSION)) === 'gif';
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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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* @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, $keepRatio = false)
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{
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if ($keepRatio && $this->isGif($image)) {
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return $this->getPublicUrl($image->path);
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}
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$thumbDirName = '/' . ($keepRatio ? 'scaled-' : 'thumbs-') . $width . '-' . $height . '/';
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$imagePath = $image->path;
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$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 = $this->getStorage($image->type);
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if ($storage->exists($thumbFilePath)) {
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return $this->getPublicUrl($thumbFilePath);
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}
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$thumbData = $this->resizeImage($storage->get($imagePath), $width, $height, $keepRatio);
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$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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* Resize image data.
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* @param string $imageData
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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 ImageUploadException
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*/
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protected function resizeImage(string $imageData, $width = 220, $height = null, bool $keepRatio = true)
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{
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try {
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$thumb = $this->imageTool->make($imageData);
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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(trans('errors.cannot_create_thumbs'));
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}
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throw $e;
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}
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if ($keepRatio) {
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$thumb->resize($width, $height, function ($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, $height);
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}
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return (string)$thumb->encode();
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}
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/**
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* Get the raw data content from an image.
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* @param Image $image
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* @return string
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* @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
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*/
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public function getImageData(Image $image)
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{
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$imagePath = $image->path;
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$storage = $this->getStorage();
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return $storage->get($imagePath);
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}
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/**
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* Destroy an image along with its revisions, thumbnails and remaining folders.
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* @param Image $image
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* @throws Exception
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*/
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public function destroy(Image $image)
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{
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$this->destroyImagesFromPath($image->path);
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$image->delete();
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}
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/**
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* Destroys an image at the given path.
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* Searches for image thumbnails in addition to main provided path..
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* @param string $path
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* @return bool
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*/
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protected function destroyImagesFromPath(string $path)
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{
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$storage = $this->getStorage();
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$imageFolder = dirname($path);
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$imageFileName = basename($path);
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$allImages = collect($storage->allFiles($imageFolder));
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// Delete image files
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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($imagesToDelete->all());
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// Cleanup of empty folders
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$foldersInvolved = array_merge([$imageFolder], $storage->directories($imageFolder));
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foreach ($foldersInvolved as $directory) {
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if ($this->isFolderEmpty($directory)) {
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$storage->deleteDirectory($directory);
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}
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}
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return true;
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}
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/**
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* Save an avatar image from an external service.
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* @param \BookStack\Auth\User $user
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* @param int $size
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* @return Image
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* @throws Exception
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*/
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public function saveUserAvatar(User $user, $size = 500)
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{
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$avatarUrl = $this->getAvatarUrl();
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$email = strtolower(trim($user->email));
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$replacements = [
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'${hash}' => md5($email),
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'${size}' => $size,
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'${email}' => urlencode($email),
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];
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$userAvatarUrl = strtr($avatarUrl, $replacements);
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$imageName = str_replace(' ', '-', $user->name . '-avatar.png');
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$image = $this->saveNewFromUrl($userAvatarUrl, '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->uploaded_to = $user->id;
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$image->save();
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return $image;
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}
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/**
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* Check if fetching external avatars is enabled.
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* @return bool
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*/
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public function avatarFetchEnabled()
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{
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$fetchUrl = $this->getAvatarUrl();
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return is_string($fetchUrl) && strpos($fetchUrl, 'http') === 0;
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}
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/**
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* Get the URL to fetch avatars from.
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* @return string|mixed
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*/
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protected function getAvatarUrl()
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{
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$url = trim(config('services.avatar_url'));
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if (empty($url) && !config('services.disable_services')) {
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$url = 'https://www.gravatar.com/avatar/${hash}?s=${size}&d=identicon';
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}
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return $url;
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}
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/**
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* Delete gallery and drawings that are not within HTML content of pages or page revisions.
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* Checks based off of only the image name.
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* Could be much improved to be more specific but kept it generic for now to be safe.
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*
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* Returns the path of the images that would be/have been deleted.
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* @param bool $checkRevisions
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* @param bool $dryRun
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* @param array $types
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* @return array
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*/
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public function deleteUnusedImages($checkRevisions = true, $dryRun = true, $types = ['gallery', 'drawio'])
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{
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$types = array_intersect($types, ['gallery', 'drawio']);
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$deletedPaths = [];
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$this->image->newQuery()->whereIn('type', $types)
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->chunk(1000, function ($images) use ($types, $checkRevisions, &$deletedPaths, $dryRun) {
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foreach ($images as $image) {
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$searchQuery = '%' . basename($image->path) . '%';
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$inPage = DB::table('pages')
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->where('html', 'like', $searchQuery)->count() > 0;
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$inRevision = false;
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if ($checkRevisions) {
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$inRevision = DB::table('page_revisions')
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->where('html', 'like', $searchQuery)->count() > 0;
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}
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if (!$inPage && !$inRevision) {
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$deletedPaths[] = $image->path;
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if (!$dryRun) {
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$this->destroy($image);
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}
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}
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}
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});
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return $deletedPaths;
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}
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/**
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* Convert a image URI to a Base64 encoded string.
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* Attempts to find locally via set storage method first.
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* @param string $uri
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* @return null|string
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* @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
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*/
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public function imageUriToBase64(string $uri)
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{
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$isLocal = strpos(trim($uri), 'http') !== 0;
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// Attempt to find local files even if url not absolute
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$base = url('/');
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if (!$isLocal && strpos($uri, $base) === 0) {
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$isLocal = true;
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$uri = str_replace($base, '', $uri);
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}
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$imageData = null;
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if ($isLocal) {
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$uri = trim($uri, '/');
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$storage = $this->getStorage();
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if ($storage->exists($uri)) {
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$imageData = $storage->get($uri);
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}
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} else {
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try {
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$imageData = $this->http->fetch($uri);
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} catch (\Exception $e) {
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}
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}
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if ($imageData === null) {
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return null;
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}
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$extension = pathinfo($uri, PATHINFO_EXTENSION);
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if ($extension === 'svg') {
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$extension = 'svg+xml';
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}
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return 'data:image/' . $extension . ';base64,' . base64_encode($imageData);
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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 ($storageUrl == false && config('filesystems.images') === 's3') {
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$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 = $storageUrl;
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}
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$basePath = ($this->storageUrl == false) ? url('/') : $this->storageUrl;
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return rtrim($basePath, '/') . $filePath;
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}
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}
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