mirror of
https://github.com/BookStackApp/BookStack.git
synced 2024-10-01 01:36:00 -04:00
501 lines
16 KiB
PHP
501 lines
16 KiB
PHP
<?php
|
|
|
|
namespace BookStack\Uploads;
|
|
|
|
use BookStack\Exceptions\ImageUploadException;
|
|
use ErrorException;
|
|
use Exception;
|
|
use Illuminate\Contracts\Cache\Repository as Cache;
|
|
use Illuminate\Contracts\Filesystem\Factory as FileSystem;
|
|
use Illuminate\Contracts\Filesystem\FileNotFoundException;
|
|
use Illuminate\Contracts\Filesystem\Filesystem as FileSystemInstance;
|
|
use Illuminate\Contracts\Filesystem\Filesystem as Storage;
|
|
use Illuminate\Support\Facades\DB;
|
|
use Illuminate\Support\Str;
|
|
use Intervention\Image\Exception\NotSupportedException;
|
|
use Intervention\Image\ImageManager;
|
|
use League\Flysystem\Util;
|
|
use Symfony\Component\HttpFoundation\File\UploadedFile;
|
|
|
|
class ImageService
|
|
{
|
|
protected $imageTool;
|
|
protected $cache;
|
|
protected $storageUrl;
|
|
protected $image;
|
|
protected $fileSystem;
|
|
|
|
/**
|
|
* ImageService constructor.
|
|
*/
|
|
public function __construct(Image $image, ImageManager $imageTool, FileSystem $fileSystem, Cache $cache)
|
|
{
|
|
$this->image = $image;
|
|
$this->imageTool = $imageTool;
|
|
$this->fileSystem = $fileSystem;
|
|
$this->cache = $cache;
|
|
}
|
|
|
|
/**
|
|
* Get the storage that will be used for storing images.
|
|
*/
|
|
protected function getStorage(string $imageType = ''): FileSystemInstance
|
|
{
|
|
return $this->fileSystem->disk($this->getStorageDiskName($imageType));
|
|
}
|
|
|
|
/**
|
|
* Change the originally provided path to fit any disk-specific requirements.
|
|
* This also ensures the path is kept to the expected root folders.
|
|
*/
|
|
protected function adjustPathForStorageDisk(string $path, string $imageType = ''): string
|
|
{
|
|
$path = Util::normalizePath(str_replace('uploads/images/', '', $path));
|
|
|
|
if ($this->getStorageDiskName($imageType) === 'local_secure_images') {
|
|
return $path;
|
|
}
|
|
|
|
return 'uploads/images/' . $path;
|
|
}
|
|
|
|
/**
|
|
* Get the name of the storage disk to use.
|
|
*/
|
|
protected function getStorageDiskName(string $imageType): string
|
|
{
|
|
$storageType = config('filesystems.images');
|
|
|
|
// Ensure system images (App logo) are uploaded to a public space
|
|
if ($imageType === 'system' && $storageType === 'local_secure') {
|
|
$storageType = 'local';
|
|
}
|
|
|
|
if ($storageType === 'local_secure') {
|
|
$storageType = 'local_secure_images';
|
|
}
|
|
|
|
return $storageType;
|
|
}
|
|
|
|
/**
|
|
* Saves a new image from an upload.
|
|
*
|
|
* @throws ImageUploadException
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public function saveNewFromUpload(
|
|
UploadedFile $uploadedFile,
|
|
string $type,
|
|
int $uploadedTo = 0,
|
|
int $resizeWidth = null,
|
|
int $resizeHeight = null,
|
|
bool $keepRatio = true
|
|
) {
|
|
$imageName = $uploadedFile->getClientOriginalName();
|
|
$imageData = file_get_contents($uploadedFile->getRealPath());
|
|
|
|
if ($resizeWidth !== null || $resizeHeight !== null) {
|
|
$imageData = $this->resizeImage($imageData, $resizeWidth, $resizeHeight, $keepRatio);
|
|
}
|
|
|
|
return $this->saveNew($imageName, $imageData, $type, $uploadedTo);
|
|
}
|
|
|
|
/**
|
|
* Save a new image from a uri-encoded base64 string of data.
|
|
*
|
|
* @throws ImageUploadException
|
|
*/
|
|
public function saveNewFromBase64Uri(string $base64Uri, string $name, string $type, int $uploadedTo = 0): Image
|
|
{
|
|
$splitData = explode(';base64,', $base64Uri);
|
|
if (count($splitData) < 2) {
|
|
throw new ImageUploadException('Invalid base64 image data provided');
|
|
}
|
|
$data = base64_decode($splitData[1]);
|
|
|
|
return $this->saveNew($name, $data, $type, $uploadedTo);
|
|
}
|
|
|
|
/**
|
|
* Save a new image into storage.
|
|
*
|
|
* @throws ImageUploadException
|
|
*/
|
|
public function saveNew(string $imageName, string $imageData, string $type, int $uploadedTo = 0): Image
|
|
{
|
|
$storage = $this->getStorage($type);
|
|
$secureUploads = setting('app-secure-images');
|
|
$fileName = $this->cleanImageFileName($imageName);
|
|
|
|
$imagePath = '/uploads/images/' . $type . '/' . date('Y-m') . '/';
|
|
|
|
while ($storage->exists($this->adjustPathForStorageDisk($imagePath . $fileName, $type))) {
|
|
$fileName = Str::random(3) . $fileName;
|
|
}
|
|
|
|
$fullPath = $imagePath . $fileName;
|
|
if ($secureUploads) {
|
|
$fullPath = $imagePath . Str::random(16) . '-' . $fileName;
|
|
}
|
|
|
|
try {
|
|
$this->saveImageDataInPublicSpace($storage, $this->adjustPathForStorageDisk($fullPath, $type), $imageData);
|
|
} catch (Exception $e) {
|
|
\Log::error('Error when attempting image upload:' . $e->getMessage());
|
|
|
|
throw new ImageUploadException(trans('errors.path_not_writable', ['filePath' => $fullPath]));
|
|
}
|
|
|
|
$imageDetails = [
|
|
'name' => $imageName,
|
|
'path' => $fullPath,
|
|
'url' => $this->getPublicUrl($fullPath),
|
|
'type' => $type,
|
|
'uploaded_to' => $uploadedTo,
|
|
];
|
|
|
|
if (user()->id !== 0) {
|
|
$userId = user()->id;
|
|
$imageDetails['created_by'] = $userId;
|
|
$imageDetails['updated_by'] = $userId;
|
|
}
|
|
|
|
$image = $this->image->newInstance();
|
|
$image->forceFill($imageDetails)->save();
|
|
|
|
return $image;
|
|
}
|
|
|
|
/**
|
|
* Save image data for the given path in the public space, if possible,
|
|
* for the provided storage mechanism.
|
|
*/
|
|
protected function saveImageDataInPublicSpace(Storage $storage, string $path, string $data)
|
|
{
|
|
$storage->put($path, $data);
|
|
|
|
// Set visibility when a non-AWS-s3, s3-like storage option is in use.
|
|
// Done since this call can break s3-like services but desired for other image stores.
|
|
// Attempting to set ACL during above put request requires different permissions
|
|
// hence would technically be a breaking change for actual s3 usage.
|
|
$usingS3 = strtolower(config('filesystems.images')) === 's3';
|
|
$usingS3Like = $usingS3 && !is_null(config('filesystems.disks.s3.endpoint'));
|
|
if (!$usingS3Like) {
|
|
$storage->setVisibility($path, 'public');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Clean up an image file name to be both URL and storage safe.
|
|
*/
|
|
protected function cleanImageFileName(string $name): string
|
|
{
|
|
$name = str_replace(' ', '-', $name);
|
|
$nameParts = explode('.', $name);
|
|
$extension = array_pop($nameParts);
|
|
$name = implode('-', $nameParts);
|
|
$name = Str::slug($name);
|
|
|
|
if (strlen($name) === 0) {
|
|
$name = Str::random(10);
|
|
}
|
|
|
|
return $name . '.' . $extension;
|
|
}
|
|
|
|
/**
|
|
* Checks if the image is a gif. Returns true if it is, else false.
|
|
*/
|
|
protected function isGif(Image $image): bool
|
|
{
|
|
return strtolower(pathinfo($image->path, PATHINFO_EXTENSION)) === 'gif';
|
|
}
|
|
|
|
/**
|
|
* Get the thumbnail for an image.
|
|
* If $keepRatio is true only the width will be used.
|
|
* Checks the cache then storage to avoid creating / accessing the filesystem on every check.
|
|
*
|
|
* @param Image $image
|
|
* @param int $width
|
|
* @param int $height
|
|
* @param bool $keepRatio
|
|
*
|
|
* @throws Exception
|
|
* @throws ImageUploadException
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getThumbnail(Image $image, $width = 220, $height = 220, $keepRatio = false)
|
|
{
|
|
if ($keepRatio && $this->isGif($image)) {
|
|
return $this->getPublicUrl($image->path);
|
|
}
|
|
|
|
$thumbDirName = '/' . ($keepRatio ? 'scaled-' : 'thumbs-') . $width . '-' . $height . '/';
|
|
$imagePath = $image->path;
|
|
$thumbFilePath = dirname($imagePath) . $thumbDirName . basename($imagePath);
|
|
|
|
if ($this->cache->has('images-' . $image->id . '-' . $thumbFilePath) && $this->cache->get('images-' . $thumbFilePath)) {
|
|
return $this->getPublicUrl($thumbFilePath);
|
|
}
|
|
|
|
$storage = $this->getStorage($image->type);
|
|
if ($storage->exists($this->adjustPathForStorageDisk($thumbFilePath, $image->type))) {
|
|
return $this->getPublicUrl($thumbFilePath);
|
|
}
|
|
|
|
$thumbData = $this->resizeImage($storage->get($this->adjustPathForStorageDisk($imagePath, $image->type)), $width, $height, $keepRatio);
|
|
|
|
$this->saveImageDataInPublicSpace($storage, $this->adjustPathForStorageDisk($thumbFilePath, $image->type), $thumbData);
|
|
$this->cache->put('images-' . $image->id . '-' . $thumbFilePath, $thumbFilePath, 60 * 60 * 72);
|
|
|
|
return $this->getPublicUrl($thumbFilePath);
|
|
}
|
|
|
|
/**
|
|
* Resize image data.
|
|
*
|
|
* @param string $imageData
|
|
* @param int $width
|
|
* @param int $height
|
|
* @param bool $keepRatio
|
|
*
|
|
* @throws ImageUploadException
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function resizeImage(string $imageData, $width = 220, $height = null, bool $keepRatio = true)
|
|
{
|
|
try {
|
|
$thumb = $this->imageTool->make($imageData);
|
|
} catch (Exception $e) {
|
|
if ($e instanceof ErrorException || $e instanceof NotSupportedException) {
|
|
throw new ImageUploadException(trans('errors.cannot_create_thumbs'));
|
|
}
|
|
|
|
throw $e;
|
|
}
|
|
|
|
if ($keepRatio) {
|
|
$thumb->resize($width, $height, function ($constraint) {
|
|
$constraint->aspectRatio();
|
|
$constraint->upsize();
|
|
});
|
|
} else {
|
|
$thumb->fit($width, $height);
|
|
}
|
|
|
|
$thumbData = (string) $thumb->encode();
|
|
|
|
// Use original image data if we're keeping the ratio
|
|
// and the resizing does not save any space.
|
|
if ($keepRatio && strlen($thumbData) > strlen($imageData)) {
|
|
return $imageData;
|
|
}
|
|
|
|
return $thumbData;
|
|
}
|
|
|
|
/**
|
|
* Get the raw data content from an image.
|
|
*
|
|
* @throws FileNotFoundException
|
|
*/
|
|
public function getImageData(Image $image): string
|
|
{
|
|
$storage = $this->getStorage();
|
|
|
|
return $storage->get($this->adjustPathForStorageDisk($image->path, $image->type));
|
|
}
|
|
|
|
/**
|
|
* Destroy an image along with its revisions, thumbnails and remaining folders.
|
|
*
|
|
* @throws Exception
|
|
*/
|
|
public function destroy(Image $image)
|
|
{
|
|
$this->destroyImagesFromPath($image->path, $image->type);
|
|
$image->delete();
|
|
}
|
|
|
|
/**
|
|
* Destroys an image at the given path.
|
|
* Searches for image thumbnails in addition to main provided path.
|
|
*/
|
|
protected function destroyImagesFromPath(string $path, string $imageType): bool
|
|
{
|
|
$path = $this->adjustPathForStorageDisk($path, $imageType);
|
|
$storage = $this->getStorage($imageType);
|
|
|
|
$imageFolder = dirname($path);
|
|
$imageFileName = basename($path);
|
|
$allImages = collect($storage->allFiles($imageFolder));
|
|
|
|
// Delete image files
|
|
$imagesToDelete = $allImages->filter(function ($imagePath) use ($imageFileName) {
|
|
return basename($imagePath) === $imageFileName;
|
|
});
|
|
$storage->delete($imagesToDelete->all());
|
|
|
|
// Cleanup of empty folders
|
|
$foldersInvolved = array_merge([$imageFolder], $storage->directories($imageFolder));
|
|
foreach ($foldersInvolved as $directory) {
|
|
if ($this->isFolderEmpty($storage, $directory)) {
|
|
$storage->deleteDirectory($directory);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Check whether a folder is empty.
|
|
*/
|
|
protected function isFolderEmpty(FileSystemInstance $storage, string $path): bool
|
|
{
|
|
$files = $storage->files($path);
|
|
$folders = $storage->directories($path);
|
|
|
|
return count($files) === 0 && count($folders) === 0;
|
|
}
|
|
|
|
/**
|
|
* Delete gallery and drawings that are not within HTML content of pages or page revisions.
|
|
* Checks based off of only the image name.
|
|
* Could be much improved to be more specific but kept it generic for now to be safe.
|
|
*
|
|
* Returns the path of the images that would be/have been deleted.
|
|
*/
|
|
public function deleteUnusedImages(bool $checkRevisions = true, bool $dryRun = true)
|
|
{
|
|
$types = ['gallery', 'drawio'];
|
|
$deletedPaths = [];
|
|
|
|
$this->image->newQuery()->whereIn('type', $types)
|
|
->chunk(1000, function ($images) use ($checkRevisions, &$deletedPaths, $dryRun) {
|
|
foreach ($images as $image) {
|
|
$searchQuery = '%' . basename($image->path) . '%';
|
|
$inPage = DB::table('pages')
|
|
->where('html', 'like', $searchQuery)->count() > 0;
|
|
|
|
$inRevision = false;
|
|
if ($checkRevisions) {
|
|
$inRevision = DB::table('page_revisions')
|
|
->where('html', 'like', $searchQuery)->count() > 0;
|
|
}
|
|
|
|
if (!$inPage && !$inRevision) {
|
|
$deletedPaths[] = $image->path;
|
|
if (!$dryRun) {
|
|
$this->destroy($image);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
return $deletedPaths;
|
|
}
|
|
|
|
/**
|
|
* Convert an image URI to a Base64 encoded string.
|
|
* Attempts to convert the URL to a system storage url then
|
|
* fetch the data from the disk or storage location.
|
|
* Returns null if the image data cannot be fetched from storage.
|
|
*
|
|
* @throws FileNotFoundException
|
|
*/
|
|
public function imageUriToBase64(string $uri): ?string
|
|
{
|
|
$storagePath = $this->imageUrlToStoragePath($uri);
|
|
if (empty($uri) || is_null($storagePath)) {
|
|
return null;
|
|
}
|
|
|
|
$storagePath = $this->adjustPathForStorageDisk($storagePath);
|
|
$storage = $this->getStorage();
|
|
$imageData = null;
|
|
if ($storage->exists($storagePath)) {
|
|
$imageData = $storage->get($storagePath);
|
|
}
|
|
|
|
if (is_null($imageData)) {
|
|
return null;
|
|
}
|
|
|
|
$extension = pathinfo($uri, PATHINFO_EXTENSION);
|
|
if ($extension === 'svg') {
|
|
$extension = 'svg+xml';
|
|
}
|
|
|
|
return 'data:image/' . $extension . ';base64,' . base64_encode($imageData);
|
|
}
|
|
|
|
/**
|
|
* Get a storage path for the given image URL.
|
|
* Ensures the path will start with "uploads/images".
|
|
* Returns null if the url cannot be resolved to a local URL.
|
|
*/
|
|
private function imageUrlToStoragePath(string $url): ?string
|
|
{
|
|
$url = ltrim(trim($url), '/');
|
|
|
|
// Handle potential relative paths
|
|
$isRelative = strpos($url, 'http') !== 0;
|
|
if ($isRelative) {
|
|
if (strpos(strtolower($url), 'uploads/images') === 0) {
|
|
return trim($url, '/');
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
// Handle local images based on paths on the same domain
|
|
$potentialHostPaths = [
|
|
url('uploads/images/'),
|
|
$this->getPublicUrl('/uploads/images/'),
|
|
];
|
|
|
|
foreach ($potentialHostPaths as $potentialBasePath) {
|
|
$potentialBasePath = strtolower($potentialBasePath);
|
|
if (strpos(strtolower($url), $potentialBasePath) === 0) {
|
|
return 'uploads/images/' . trim(substr($url, strlen($potentialBasePath)), '/');
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Gets a public facing url for an image by checking relevant environment variables.
|
|
* If s3-style store is in use it will default to guessing a public bucket URL.
|
|
*/
|
|
private function getPublicUrl(string $filePath): string
|
|
{
|
|
if ($this->storageUrl === null) {
|
|
$storageUrl = config('filesystems.url');
|
|
|
|
// Get the standard public s3 url if s3 is set as storage type
|
|
// Uses the nice, short URL if bucket name has no periods in otherwise the longer
|
|
// region-based url will be used to prevent http issues.
|
|
if ($storageUrl == false && config('filesystems.images') === 's3') {
|
|
$storageDetails = config('filesystems.disks.s3');
|
|
if (strpos($storageDetails['bucket'], '.') === false) {
|
|
$storageUrl = 'https://' . $storageDetails['bucket'] . '.s3.amazonaws.com';
|
|
} else {
|
|
$storageUrl = 'https://s3-' . $storageDetails['region'] . '.amazonaws.com/' . $storageDetails['bucket'];
|
|
}
|
|
}
|
|
$this->storageUrl = $storageUrl;
|
|
}
|
|
|
|
$basePath = ($this->storageUrl == false) ? url('/') : $this->storageUrl;
|
|
|
|
return rtrim($basePath, '/') . $filePath;
|
|
}
|
|
}
|