Allow custom emojis with image/apng media type

CHANGELOG.md

@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Save sizes of media attachments and other files to database.
 - Added `import-emoji` command.
 - Added support for emoji shortcodes.
+- Allowed custom emojis with `image/apng` media type.
 
 ### Changed
 

src/mastodon_api/instance/types.rs

@@ -28,7 +28,7 @@ struct InstanceStatusLimits {
 
 #[derive(Serialize)]
 struct InstanceMediaLimits {
-    supported_mime_types: [&'static str; 7],
+    supported_mime_types: Vec<String>,
     image_size_limit: usize,
 }
 
@@ -149,7 +149,8 @@ impl InstanceInfo {
                     max_media_attachments: ATTACHMENTS_MAX_NUM,
                 },
                 media_attachments: InstanceMediaLimits {
-                    supported_mime_types: SUPPORTED_MEDIA_TYPES,
+                    supported_mime_types: SUPPORTED_MEDIA_TYPES.iter()
+                        .map(|media_type| media_type.to_string()).collect(),
                     image_size_limit: UPLOAD_MAX_SIZE,
                 },
             },

src/models/emojis/validators.rs

@@ -5,7 +5,8 @@ use crate::errors::ValidationError;
 const EMOJI_NAME_RE: &str = r"^[\w.]+$";
 pub const EMOJI_MAX_SIZE: usize = 250 * 1000; // 250 kB
 pub const EMOJI_LOCAL_MAX_SIZE: usize = 50 * 1000; // 50 kB
-pub const EMOJI_MEDIA_TYPES: [&str; 2] = [
+pub const EMOJI_MEDIA_TYPES: [&str; 3] = [
+    "image/apng",
     "image/gif",
     "image/png",
 ];

src/utils/files.rs

@@ -13,8 +13,9 @@ use mime_guess::get_mime_extensions_str;
 use mime_sniffer::MimeTypeSniffer;
 use sha2::{Digest, Sha256};
 
-pub const SUPPORTED_MEDIA_TYPES: [&str; 7] = [
+pub const SUPPORTED_MEDIA_TYPES: [&str; 8] = [
     "audio/mpeg",
+    "image/apng",
     "image/gif",
     "image/jpeg",
     "image/png",