Add .svg image file support

* Don't attempt to resize SVG images.
* Add SVG mime type to image validation rules.
* Add SVG mime type to accepted image types.
* Add SVG mime type to the sniffer's safe list.

Author: tjone270

app/Exports/ZipExports/Models/ZipExportImage.php

@@ -32,7 +32,7 @@ public function metadataOnly(): void
 
     public static function validate(ZipValidationHelper $context, array $data): array
     {
-        $acceptedImageTypes = ['image/png', 'image/jpeg', 'image/gif', 'image/webp'];
+        $acceptedImageTypes = ['image/png', 'image/jpeg', 'image/gif', 'image/webp', 'image/svg+xml'];
         $rules = [
             'id'    => ['nullable', 'int', $context->uniqueIdRule('image')],
             'name'  => ['required', 'string', 'min:1'],

app/Http/Controller.php

@@ -163,7 +163,7 @@ protected function logActivity(string $type, string|Loggable $detail = ''): void
      */
     protected function getImageValidationRules(): array
     {
-        return ['image_extension', 'mimes:jpeg,png,gif,webp', 'max:' . (config('app.upload_limit') * 1000)];
+        return ['image_extension', 'mimes:jpeg,png,gif,webp,svg', 'max:' . (config('app.upload_limit') * 1000)];
     }
 
     /**

app/Uploads/ImageResizer.php

@@ -66,6 +66,11 @@ public function resizeToThumbnailUrl(
         bool $keepRatio = false,
         bool $shouldCreate = false
     ): ?string {
+        // Do not attempt to resize SVGs, return the raw value always.
+        if ($this->isSvg($image)) {
+            return $this->storage->getPublicUrl($image->path);
+        }
+
         // Do not resize GIF images where we're not cropping
         if ($keepRatio && $this->isGif($image)) {
             return $this->storage->getPublicUrl($image->path);
@@ -226,6 +231,14 @@ protected function isGif(Image $image): bool
         return $this->getExtension($image) === 'gif';
     }
 
+    /**
+     * Checks if the image is a svg. Returns true if it is, else false.
+     */
+    protected function isSvg(Image $image): bool
+    {
+        return $this->getExtension($image) === 'svg';
+    }
+
     /**
      * Get the extension for the given image, normalised to lower-case.
      */

app/Uploads/ImageService.php

@@ -13,7 +13,7 @@
 
 class ImageService
 {
-    protected static array $supportedExtensions = ['jpg', 'jpeg', 'png', 'gif', 'webp'];
+    protected static array $supportedExtensions = ['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg'];
 
     public function __construct(
         protected ImageStorage $storage,

app/Util/WebSafeMimeSniffer.php

@@ -33,6 +33,7 @@ class WebSafeMimeSniffer
         'image/webp',
         'image/avif',
         'image/heic',
+        'image/svg+xml',
         'text/css',
         'text/csv',
         'text/javascript',