Initial shared instances backend (#3800)

* Create base shared instance migration and initial routes

* Fix build

* Add version uploads

* Add permissions field for shared instance users

* Actually use permissions field

* Add "public" flag to shared instances that allow GETing them without authorization

* Add the ability to get and list shared instance versions

* Add the ability to delete shared instance versions

* Fix build after merge

* Secured file hosting (#3784)

* Remove Backblaze-specific file-hosting backend

* Added S3_USES_PATH_STYLE_BUCKETS

* Remove unused file_id parameter from delete_file_version

* Add support for separate public and private buckets in labrinth::file_hosting

* Rename delete_file_version to delete_file

* Add (untested) get_url_for_private_file

* Remove url field from shared instance routes

* Remove url field from shared instance routes

* Use private bucket for shared instance versions

* Make S3 environment variables fully separate between public and private buckets

* Change file host expiry for shared instances to 180 seconds

* Fix lint

* Merge shared instance migrations into a single migration

* Replace shared instance owners with Ghost instead of deleting the instance

apps/labrinth/src/util/img.rs

@@ -1,7 +1,7 @@
 use crate::database;
 use crate::database::models::image_item;
 use crate::database::redis::RedisPool;
-use crate::file_hosting::FileHost;
+use crate::file_hosting::{FileHost, FileHostPublicity};
 use crate::models::images::ImageContext;
 use crate::routes::ApiError;
 use color_thief::ColorFormat;
@@ -38,11 +38,14 @@ pub struct UploadImageResult {
     pub raw_url: String,
     pub raw_url_path: String,
 
+    pub publicity: FileHostPublicity,
+
     pub color: Option<u32>,
 }
 
 pub async fn upload_image_optimized(
     upload_folder: &str,
+    publicity: FileHostPublicity,
     bytes: bytes::Bytes,
     file_extension: &str,
     target_width: Option<u32>,
@@ -80,6 +83,7 @@ pub async fn upload_image_optimized(
                         target_width.unwrap_or(0),
                         processed_image_ext
                     ),
+                    publicity,
                     processed_image,
                 )
                 .await?,
@@ -92,6 +96,7 @@ pub async fn upload_image_optimized(
         .upload_file(
             content_type,
             &format!("{upload_folder}/{hash}.{file_extension}"),
+            publicity,
             bytes,
         )
         .await?;
@@ -107,6 +112,9 @@ pub async fn upload_image_optimized(
 
         raw_url: url,
         raw_url_path: upload_data.file_name,
+
+        publicity,
+
         color,
     })
 }
@@ -165,6 +173,7 @@ fn convert_to_webp(img: &DynamicImage) -> Result<Vec<u8>, ImageError> {
 pub async fn delete_old_images(
     image_url: Option<String>,
     raw_image_url: Option<String>,
+    publicity: FileHostPublicity,
     file_host: &dyn FileHost,
 ) -> Result<(), ApiError> {
     let cdn_url = dotenvy::var("CDN_URL")?;
@@ -173,7 +182,7 @@ pub async fn delete_old_images(
         let name = image_url.split(&cdn_url_start).nth(1);
 
         if let Some(icon_path) = name {
-            file_host.delete_file_version("", icon_path).await?;
+            file_host.delete_file(icon_path, publicity).await?;
         }
     }
 
@@ -181,7 +190,7 @@ pub async fn delete_old_images(
         let name = raw_image_url.split(&cdn_url_start).nth(1);
 
         if let Some(icon_path) = name {
-            file_host.delete_file_version("", icon_path).await?;
+            file_host.delete_file(icon_path, publicity).await?;
         }
     }