X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/0830521e60d782963e4e781b92c04eb9627abebe..refs/pull/2513/head:/app/Uploads/ImageService.php

diff --git a/app/Uploads/ImageService.php b/app/Uploads/ImageService.php
index 1dd8b713d..92c3994a7 100644
--- a/app/Uploads/ImageService.php
+++ b/app/Uploads/ImageService.php
@@ -1,52 +1,45 @@
 <?php namespace BookStack\Uploads;
 
-use BookStack\Auth\User;
-use BookStack\Exceptions\HttpFetchException;
 use BookStack\Exceptions\ImageUploadException;
 use DB;
+use ErrorException;
 use Exception;
 use Illuminate\Contracts\Cache\Repository as Cache;
 use Illuminate\Contracts\Filesystem\Factory as FileSystem;
+use Illuminate\Contracts\Filesystem\Filesystem as FileSystemInstance;
+use Illuminate\Contracts\Filesystem\FileNotFoundException;
+use Illuminate\Support\Str;
 use Intervention\Image\Exception\NotSupportedException;
 use Intervention\Image\ImageManager;
 use Symfony\Component\HttpFoundation\File\UploadedFile;
 
-class ImageService extends UploadService
+class ImageService
 {
-
     protected $imageTool;
     protected $cache;
     protected $storageUrl;
     protected $image;
-    protected $http;
+    protected $fileSystem;
 
     /**
      * ImageService constructor.
-     * @param Image $image
-     * @param ImageManager $imageTool
-     * @param FileSystem $fileSystem
-     * @param Cache $cache
-     * @param HttpFetcher $http
      */
-    public function __construct(Image $image, ImageManager $imageTool, FileSystem $fileSystem, Cache $cache, HttpFetcher $http)
+    public function __construct(Image $image, ImageManager $imageTool, FileSystem $fileSystem, Cache $cache)
     {
         $this->image = $image;
         $this->imageTool = $imageTool;
+        $this->fileSystem = $fileSystem;
         $this->cache = $cache;
-        $this->http = $http;
-        parent::__construct($fileSystem);
     }
 
     /**
      * Get the storage that will be used for storing images.
-     * @param string $type
-     * @return \Illuminate\Contracts\Filesystem\Filesystem
      */
-    protected function getStorage($type = '')
+    protected function getStorage(string $type = ''): FileSystemInstance
     {
-        $storageType = config('filesystems.default');
+        $storageType = config('filesystems.images');
 
-        // Override default location if set to local public to ensure not visible.
+        // Ensure system images (App logo) are uploaded to a public space
         if ($type === 'system' && $storageType === 'local_secure') {
             $storageType = 'local';
         }
@@ -56,29 +49,32 @@ class ImageService extends UploadService
 
     /**
      * Saves a new image from an upload.
-     * @param UploadedFile $uploadedFile
-     * @param  string $type
-     * @param int $uploadedTo
      * @return mixed
      * @throws ImageUploadException
      */
-    public function saveNewFromUpload(UploadedFile $uploadedFile, $type, $uploadedTo = 0)
-    {
+    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.
-     * @param string $base64Uri
-     * @param string $name
-     * @param string $type
-     * @param int $uploadedTo
-     * @return Image
      * @throws ImageUploadException
      */
-    public function saveNewFromBase64Uri(string $base64Uri, string $name, string $type, $uploadedTo = 0)
+    public function saveNewFromBase64Uri(string $base64Uri, string $name, string $type, int $uploadedTo = 0): Image
     {
         $splitData = explode(';base64,', $base64Uri);
         if (count($splitData) < 2) {
@@ -89,48 +85,24 @@ class ImageService extends UploadService
     }
 
     /**
-     * Gets an image from url and saves it to the database.
-     * @param             $url
-     * @param string      $type
-     * @param bool|string $imageName
-     * @return mixed
-     * @throws \Exception
-     */
-    private function saveNewFromUrl($url, $type, $imageName = false)
-    {
-        $imageName = $imageName ? $imageName : basename($url);
-        try {
-            $imageData = $this->http->fetch($url);
-        } catch (HttpFetchException $exception) {
-            throw new \Exception(trans('errors.cannot_get_image_from_url', ['url' => $url]));
-        }
-        return $this->saveNew($imageName, $imageData, $type);
-    }
-
-    /**
-     * Saves a new image
-     * @param string $imageName
-     * @param string $imageData
-     * @param string $type
-     * @param int $uploadedTo
-     * @return Image
+     * Save a new image into storage.
      * @throws ImageUploadException
      */
-    private function saveNew($imageName, $imageData, $type, $uploadedTo = 0)
+    public function saveNew(string $imageName, string $imageData, string $type, int $uploadedTo = 0): Image
     {
         $storage = $this->getStorage($type);
         $secureUploads = setting('app-secure-images');
-        $imageName = str_replace(' ', '-', $imageName);
+        $fileName = $this->cleanImageFileName($imageName);
 
-        $imagePath = '/uploads/images/' . $type . '/' . Date('Y-m-M') . '/';
+        $imagePath = '/uploads/images/' . $type . '/' . Date('Y-m') . '/';
 
-        while ($storage->exists($imagePath . $imageName)) {
-            $imageName = str_random(3) . $imageName;
+        while ($storage->exists($imagePath . $fileName)) {
+            $fileName = Str::random(3) . $fileName;
         }
 
-        $fullPath = $imagePath . $imageName;
+        $fullPath = $imagePath . $fileName;
         if ($secureUploads) {
-            $fullPath = $imagePath . str_random(16) . '-' . $imageName;
+            $fullPath = $imagePath . Str::random(16) . '-' . $fileName;
         }
 
         try {
@@ -141,10 +113,10 @@ class ImageService extends UploadService
         }
 
         $imageDetails = [
-            'name'       => $imageName,
-            'path'       => $fullPath,
-            'url'        => $this->getPublicUrl($fullPath),
-            'type'       => $type,
+            'name' => $imageName,
+            'path' => $fullPath,
+            'url' => $this->getPublicUrl($fullPath),
+            'type' => $type,
             'uploaded_to' => $uploadedTo
         ];
 
@@ -159,13 +131,28 @@ class ImageService extends UploadService
         return $image;
     }
 
+    /**
+     * 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.
-     * @param Image $image
-     * @return boolean
      */
-    protected function isGif(Image $image)
+    protected function isGif(Image $image): bool
     {
         return strtolower(pathinfo($image->path, PATHINFO_EXTENSION)) === 'gif';
     }
@@ -201,17 +188,38 @@ class ImageService extends UploadService
             return $this->getPublicUrl($thumbFilePath);
         }
 
+        $thumbData = $this->resizeImage($storage->get($imagePath), $width, $height, $keepRatio);
+
+        $storage->put($thumbFilePath, $thumbData);
+        $storage->setVisibility($thumbFilePath, 'public');
+        $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
+     * @return string
+     * @throws ImageUploadException
+     */
+    protected function resizeImage(string $imageData, $width = 220, $height = null, bool $keepRatio = true)
+    {
         try {
-            $thumb = $this->imageTool->make($storage->get($imagePath));
+            $thumb = $this->imageTool->make($imageData);
         } catch (Exception $e) {
-            if ($e instanceof \ErrorException || $e instanceof NotSupportedException) {
+            if ($e instanceof ErrorException || $e instanceof NotSupportedException) {
                 throw new ImageUploadException(trans('errors.cannot_create_thumbs'));
             }
             throw $e;
         }
 
         if ($keepRatio) {
-            $thumb->resize($width, null, function ($constraint) {
+            $thumb->resize($width, $height, function ($constraint) {
                 $constraint->aspectRatio();
                 $constraint->upsize();
             });
@@ -220,20 +228,21 @@ class ImageService extends UploadService
         }
 
         $thumbData = (string)$thumb->encode();
-        $storage->put($thumbFilePath, $thumbData);
-        $storage->setVisibility($thumbFilePath, 'public');
-        $this->cache->put('images-' . $image->id . '-' . $thumbFilePath, $thumbFilePath, 60 * 72);
 
-        return $this->getPublicUrl($thumbFilePath);
+        // 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.
-     * @param Image $image
-     * @return string
-     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
+     * @throws FileNotFoundException
      */
-    public function getImageData(Image $image)
+    public function getImageData(Image $image): string
     {
         $imagePath = $image->path;
         $storage = $this->getStorage();
@@ -242,7 +251,6 @@ class ImageService extends UploadService
 
     /**
      * Destroy an image along with its revisions, thumbnails and remaining folders.
-     * @param Image $image
      * @throws Exception
      */
     public function destroy(Image $image)
@@ -253,11 +261,9 @@ class ImageService extends UploadService
 
     /**
      * Destroys an image at the given path.
-     * Searches for image thumbnails in addition to main provided path..
-     * @param string $path
-     * @return bool
+     * Searches for image thumbnails in addition to main provided path.
      */
-    protected function destroyImagesFromPath(string $path)
+    protected function destroyImagesFromPath(string $path): bool
     {
         $storage = $this->getStorage();
 
@@ -267,15 +273,14 @@ class ImageService extends UploadService
 
         // Delete image files
         $imagesToDelete = $allImages->filter(function ($imagePath) use ($imageFileName) {
-            $expectedIndex = strlen($imagePath) - strlen($imageFileName);
-            return strpos($imagePath, $imageFileName) === $expectedIndex;
+            return basename($imagePath) === $imageFileName;
         });
         $storage->delete($imagesToDelete->all());
 
         // Cleanup of empty folders
         $foldersInvolved = array_merge([$imageFolder], $storage->directories($imageFolder));
         foreach ($foldersInvolved as $directory) {
-            if ($this->isFolderEmpty($directory)) {
+            if ($this->isFolderEmpty($storage, $directory)) {
                 $storage->deleteDirectory($directory);
             }
         }
@@ -284,56 +289,13 @@ class ImageService extends UploadService
     }
 
     /**
-     * Save an avatar image from an external service.
-     * @param \BookStack\Auth\User $user
-     * @param int $size
-     * @return Image
-     * @throws Exception
+     * Check whether or not a folder is empty.
      */
-    public function saveUserAvatar(User $user, $size = 500)
+    protected function isFolderEmpty(FileSystemInstance $storage, string $path): bool
     {
-        $avatarUrl = $this->getAvatarUrl();
-        $email = strtolower(trim($user->email));
-
-        $replacements = [
-            '${hash}' => md5($email),
-            '${size}' => $size,
-            '${email}' => urlencode($email),
-        ];
-
-        $userAvatarUrl = strtr($avatarUrl, $replacements);
-        $imageName = str_replace(' ', '-', $user->name . '-avatar.png');
-        $image = $this->saveNewFromUrl($userAvatarUrl, 'user', $imageName);
-        $image->created_by = $user->id;
-        $image->updated_by = $user->id;
-        $image->save();
-
-        return $image;
-    }
-
-    /**
-     * Check if fetching external avatars is enabled.
-     * @return bool
-     */
-    public function avatarFetchEnabled()
-    {
-        $fetchUrl = $this->getAvatarUrl();
-        return is_string($fetchUrl) && strpos($fetchUrl, 'http') === 0;
-    }
-
-    /**
-     * Get the URL to fetch avatars from.
-     * @return string|mixed
-     */
-    protected function getAvatarUrl()
-    {
-        $url = trim(config('services.avatar_url'));
-
-        if (empty($url) && !config('services.disable_services')) {
-            $url = 'https://www.gravatar.com/avatar/${hash}?s=${size}&d=identicon';
-        }
-
-        return $url;
+        $files = $storage->files($path);
+        $folders = $storage->directories($path);
+        return (count($files) === 0 && count($folders) === 0);
     }
 
     /**
@@ -342,26 +304,23 @@ class ImageService extends UploadService
      * 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.
-     * @param bool $checkRevisions
-     * @param bool $dryRun
-     * @param array $types
-     * @return array
      */
-    public function deleteUnusedImages($checkRevisions = true, $dryRun = true, $types = ['gallery', 'drawio'])
+    public function deleteUnusedImages(bool $checkRevisions = true, bool $dryRun = true)
     {
-        $types = array_intersect($types, ['gallery', 'drawio']);
+        $types = ['gallery', 'drawio'];
         $deletedPaths = [];
 
         $this->image->newQuery()->whereIn('type', $types)
-            ->chunk(1000, function ($images) use ($types, $checkRevisions, &$deletedPaths, $dryRun) {
+            ->chunk(1000, function ($images) use ($checkRevisions, &$deletedPaths, $dryRun) {
                 foreach ($images as $image) {
                     $searchQuery = '%' . basename($image->path) . '%';
                     $inPage = DB::table('pages')
-                         ->where('html', 'like', $searchQuery)->count() > 0;
+                            ->where('html', 'like', $searchQuery)->count() > 0;
+
                     $inRevision = false;
                     if ($checkRevisions) {
-                        $inRevision =  DB::table('page_revisions')
-                             ->where('html', 'like', $searchQuery)->count() > 0;
+                        $inRevision = DB::table('page_revisions')
+                                ->where('html', 'like', $searchQuery)->count() > 0;
                     }
 
                     if (!$inPage && !$inRevision) {
@@ -377,50 +336,75 @@ class ImageService extends UploadService
 
     /**
      * Convert a image URI to a Base64 encoded string.
-     * Attempts to find locally via set storage method first.
-     * @param string $uri
-     * @return null|string
-     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
+     * 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)
+    public function imageUriToBase64(string $uri): ?string
     {
-        $isLocal = strpos(trim($uri), 'http') !== 0;
-
-        // Attempt to find local files even if url not absolute
-        $base = baseUrl('/');
-        if (!$isLocal && strpos($uri, $base) === 0) {
-            $isLocal = true;
-            $uri = str_replace($base, '', $uri);
+        $storagePath = $this->imageUrlToStoragePath($uri);
+        if (empty($uri) || is_null($storagePath)) {
+            return null;
         }
 
+        $storage = $this->getStorage();
         $imageData = null;
+        if ($storage->exists($storagePath)) {
+            $imageData = $storage->get($storagePath);
+        }
 
-        if ($isLocal) {
-            $uri = trim($uri, '/');
-            $storage = $this->getStorage();
-            if ($storage->exists($uri)) {
-                $imageData = $storage->get($uri);
-            }
-        } else {
-            try {
-                $imageData = $this->http->fetch($uri);
-            } catch (\Exception $e) {
-            }
+        if (is_null($imageData)) {
+            return null;
+        }
+
+        $extension = pathinfo($uri, PATHINFO_EXTENSION);
+        if ($extension === 'svg') {
+            $extension = 'svg+xml';
         }
 
-        if ($imageData === null) {
+        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;
         }
 
-        return 'data:image/' . pathinfo($uri, PATHINFO_EXTENSION) . ';base64,' . base64_encode($imageData);
+        // 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.
-     * @param string $filePath
-     * @return string
+     * If s3-style store is in use it will default to guessing a public bucket URL.
      */
-    private function getPublicUrl($filePath)
+    private function getPublicUrl(string $filePath): string
     {
         if ($this->storageUrl === null) {
             $storageUrl = config('filesystems.url');
@@ -428,7 +412,7 @@ class ImageService extends UploadService
             // Get the standard public s3 url if s3 is set as storage type
             // Uses the nice, short URL if bucket name has no periods in otherwise the longer
             // region-based url will be used to prevent http issues.
-            if ($storageUrl == false && config('filesystems.default') === 's3') {
+            if ($storageUrl == false && config('filesystems.images') === 's3') {
                 $storageDetails = config('filesystems.disks.s3');
                 if (strpos($storageDetails['bucket'], '.') === false) {
                     $storageUrl = 'https://' . $storageDetails['bucket'] . '.s3.amazonaws.com';
@@ -439,7 +423,7 @@ class ImageService extends UploadService
             $this->storageUrl = $storageUrl;
         }
 
-        $basePath = ($this->storageUrl == false) ? baseUrl('/') : $this->storageUrl;
+        $basePath = ($this->storageUrl == false) ? url('/') : $this->storageUrl;
         return rtrim($basePath, '/') . $filePath;
     }
 }