BookStack/app/Uploads/AttachmentService.php

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<?php namespace BookStack\Uploads;
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use BookStack\Exceptions\FileUploadException;
use Exception;
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use Illuminate\Support\Str;
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use Symfony\Component\HttpFoundation\File\UploadedFile;
class AttachmentService extends UploadService
{
/**
* Get the storage that will be used for storing files.
* @return \Illuminate\Contracts\Filesystem\Filesystem
*/
protected function getStorage()
{
$storageType = config('filesystems.attachments');
// Override default location if set to local public to ensure not visible.
if ($storageType === 'local') {
$storageType = 'local_secure';
}
return $this->fileSystem->disk($storageType);
}
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/**
* Get an attachment from storage.
* @param Attachment $attachment
* @return string
* @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
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*/
public function getAttachmentFromStorage(Attachment $attachment)
{
return $this->getStorage()->get($attachment->path);
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}
/**
* 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);
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$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);
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$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.
* @param string $name
* @param string $link
* @param int $page_id
* @return Attachment
*/
public function saveNewFromLink($name, $link, $page_id)
{
$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 file ordering for a listing of attached files.
* @param array $attachmentList
* @param $pageId
*/
public function updateFileOrderWithinPage($attachmentList, $pageId)
{
foreach ($attachmentList as $index => $attachment) {
Attachment::where('uploaded_to', '=', $pageId)->where('id', '=', $attachment['id'])->update(['order' => $index]);
}
}
/**
* Update the details of a file.
* @param Attachment $attachment
* @param $requestData
* @return Attachment
*/
public function updateFile(Attachment $attachment, $requestData)
{
$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
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*/
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);
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$storage->delete($attachment->path);
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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)
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{
$attachmentData = file_get_contents($uploadedFile->getRealPath());
$storage = $this->getStorage();
$basePath = 'uploads/files/' . Date('Y-m-M') . '/';
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$uploadFileName = Str::random(16) . '.' . $uploadedFile->getClientOriginalExtension();
while ($storage->exists($basePath . $uploadFileName)) {
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$uploadFileName = Str::random(3) . $uploadFileName;
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}
$attachmentPath = $basePath . $uploadFileName;
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try {
$storage->put($attachmentPath, $attachmentData);
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} catch (Exception $e) {
throw new FileUploadException(trans('errors.path_not_writable', ['filePath' => $attachmentPath]));
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}
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return $attachmentPath;
}
}