BookStack/app/Uploads/AttachmentService.php
Dan Brown 888f435651
Added back-end attachments-in-browser support
A query string will cause attachments to be provided inline
with an appropriate mime type.
Remaining actions:
- Tests
- Front-end functionality
- Config option?
2021-06-06 00:51:06 +01:00

212 lines
6.4 KiB
PHP

<?php namespace BookStack\Uploads;
use BookStack\Exceptions\FileUploadException;
use Exception;
use Illuminate\Contracts\Filesystem\Factory as FileSystem;
use Illuminate\Contracts\Filesystem\FileNotFoundException;
use Illuminate\Contracts\Filesystem\Filesystem as FileSystemInstance;
use Illuminate\Support\Str;
use Log;
use Symfony\Component\HttpFoundation\File\UploadedFile;
class AttachmentService
{
protected $fileSystem;
/**
* AttachmentService constructor.
*/
public function __construct(FileSystem $fileSystem)
{
$this->fileSystem = $fileSystem;
}
/**
* Get the storage that will be used for storing files.
*/
protected function getStorage(): FileSystemInstance
{
$storageType = config('filesystems.attachments');
// Override default location if set to local public to ensure not visible.
if ($storageType === 'local') {
$storageType = 'local_secure';
}
return $this->fileSystem->disk($storageType);
}
/**
* Get an attachment from storage.
* @throws FileNotFoundException
*/
public function getAttachmentFromStorage(Attachment $attachment): string
{
return $this->getStorage()->get($attachment->path);
}
/**
* Store a new attachment upon user upload.
* @param UploadedFile $uploadedFile
* @param int $page_id
* @return Attachment
* @throws FileUploadException
*/
public function saveNewUpload(UploadedFile $uploadedFile, $page_id)
{
$attachmentName = $uploadedFile->getClientOriginalName();
$attachmentPath = $this->putFileInStorage($uploadedFile);
$largestExistingOrder = Attachment::where('uploaded_to', '=', $page_id)->max('order');
$attachment = Attachment::forceCreate([
'name' => $attachmentName,
'path' => $attachmentPath,
'extension' => $uploadedFile->getClientOriginalExtension(),
'uploaded_to' => $page_id,
'created_by' => user()->id,
'updated_by' => user()->id,
'order' => $largestExistingOrder + 1
]);
return $attachment;
}
/**
* Store a upload, saving to a file and deleting any existing uploads
* attached to that file.
* @param UploadedFile $uploadedFile
* @param Attachment $attachment
* @return Attachment
* @throws FileUploadException
*/
public function saveUpdatedUpload(UploadedFile $uploadedFile, Attachment $attachment)
{
if (!$attachment->external) {
$this->deleteFileInStorage($attachment);
}
$attachmentName = $uploadedFile->getClientOriginalName();
$attachmentPath = $this->putFileInStorage($uploadedFile);
$attachment->name = $attachmentName;
$attachment->path = $attachmentPath;
$attachment->external = false;
$attachment->extension = $uploadedFile->getClientOriginalExtension();
$attachment->save();
return $attachment;
}
/**
* Save a new File attachment from a given link and name.
*/
public function saveNewFromLink(string $name, string $link, int $page_id): Attachment
{
$largestExistingOrder = Attachment::where('uploaded_to', '=', $page_id)->max('order');
return Attachment::forceCreate([
'name' => $name,
'path' => $link,
'external' => true,
'extension' => '',
'uploaded_to' => $page_id,
'created_by' => user()->id,
'updated_by' => user()->id,
'order' => $largestExistingOrder + 1
]);
}
/**
* Updates the ordering for a listing of attached files.
*/
public function updateFileOrderWithinPage(array $attachmentOrder, string $pageId)
{
foreach ($attachmentOrder as $index => $attachmentId) {
Attachment::query()->where('uploaded_to', '=', $pageId)
->where('id', '=', $attachmentId)
->update(['order' => $index]);
}
}
/**
* Update the details of a file.
*/
public function updateFile(Attachment $attachment, array $requestData): Attachment
{
$attachment->name = $requestData['name'];
if (isset($requestData['link']) && trim($requestData['link']) !== '') {
$attachment->path = $requestData['link'];
if (!$attachment->external) {
$this->deleteFileInStorage($attachment);
$attachment->external = true;
}
}
$attachment->save();
return $attachment;
}
/**
* Delete a File from the database and storage.
* @param Attachment $attachment
* @throws Exception
*/
public function deleteFile(Attachment $attachment)
{
if ($attachment->external) {
$attachment->delete();
return;
}
$this->deleteFileInStorage($attachment);
$attachment->delete();
}
/**
* Delete a file from the filesystem it sits on.
* Cleans any empty leftover folders.
* @param Attachment $attachment
*/
protected function deleteFileInStorage(Attachment $attachment)
{
$storage = $this->getStorage();
$dirPath = dirname($attachment->path);
$storage->delete($attachment->path);
if (count($storage->allFiles($dirPath)) === 0) {
$storage->deleteDirectory($dirPath);
}
}
/**
* Store a file in storage with the given filename
* @param UploadedFile $uploadedFile
* @return string
* @throws FileUploadException
*/
protected function putFileInStorage(UploadedFile $uploadedFile)
{
$attachmentData = file_get_contents($uploadedFile->getRealPath());
$storage = $this->getStorage();
$basePath = 'uploads/files/' . Date('Y-m-M') . '/';
$uploadFileName = Str::random(16) . '.' . $uploadedFile->getClientOriginalExtension();
while ($storage->exists($basePath . $uploadFileName)) {
$uploadFileName = Str::random(3) . $uploadFileName;
}
$attachmentPath = $basePath . $uploadFileName;
try {
$storage->put($attachmentPath, $attachmentData);
} catch (Exception $e) {
Log::error('Error when attempting file upload:' . $e->getMessage());
throw new FileUploadException(trans('errors.path_not_writable', ['filePath' => $attachmentPath]));
}
return $attachmentPath;
}
}