enhance(backend): 絵文字の連合でライセンス欄を相互にやり取りするように (#15182)

* enhance(backend): 絵文字の連合でライセンス欄を相互にやり取りするように

Co-authored-by: Kisaragi Marine <kisaragi.effective@gmail.com>
Co-authored-by: ruruke <123709459+ruruke@users.noreply.github.com>

* fix CHANGELOG.md

---------

Co-authored-by: Kisaragi Marine <kisaragi.effective@gmail.com>
Co-authored-by: ruruke <123709459+ruruke@users.noreply.github.com>
Co-authored-by: taichan <40626578+tai-cha@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/backend/src/core/activitypub/ApRendererService.ts

@@ -183,6 +183,9 @@ export class ApRendererService {
 				// || emoji.originalUrl してるのは後方互換性のため（publicUrlはstringなので??はだめ）
 				url: emoji.publicUrl || emoji.originalUrl,
 			},
+			_misskey_license: {
+				freeText: emoji.license
+			},
 		};
 	}
 

packages/backend/src/core/activitypub/models/ApNoteService.ts

@@ -408,6 +408,8 @@ export class ApNoteService {
 						originalUrl: tag.icon.url,
 						publicUrl: tag.icon.url,
 						updatedAt: new Date(),
+						// _misskey_license が存在しなければ `null`
+						license: (tag._misskey_license?.freeText ?? null)
 					});
 
 					const emoji = await this.emojisRepository.findOneBy({ host, name });
@@ -429,6 +431,8 @@ export class ApNoteService {
 				publicUrl: tag.icon.url,
 				updatedAt: new Date(),
 				aliases: [],
+				// _misskey_license が存在しなければ `null`
+				license: (tag._misskey_license?.freeText ?? null)
 			});
 		}));
 	}

packages/backend/src/core/activitypub/type.ts

@@ -242,6 +242,11 @@ export interface IApEmoji extends IObject {
 	type: 'Emoji';
 	name: string;
 	updated: string;
+	// Misskey拡張。後方互換性のためにoptional。
+	// 将来の拡張性を考慮してobjectにしている
+	_misskey_license?: {
+		freeText: string | null;
+	};
 }
 
 export const isEmoji = (object: IObject): object is IApEmoji =>