merge: upstream changes for 2024.11 (!742)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/742

Closes #645 and #646

Approved-by: Hazelnoot <acomputerdog@gmail.com>
Approved-by: Marie <github@yuugi.dev>

27 files changed, 547 insertions, 104 deletions

diff --git a/packages/backend/src/server/api/ApiServerService.ts b/packages/backend/src/server/api/ApiServerService.ts
index ac3b982742..0d77309537 100644
--- a/packages/backend/src/server/api/ApiServerService.ts
+++ b/packages/backend/src/server/api/ApiServerService.ts
@@ -119,25 +119,30 @@ export class ApiServerService {
 				'g-recaptcha-response'?: string;
 				'turnstile-response'?: string;
 				'frc-captcha-solution'?: string;
+				'm-captcha-response'?: string;
+				'testcaptcha-response'?: string;
 			}
 		}>('/signup', (request, reply) => this.signupApiService.signup(request, reply));
 
 		fastify.post<{
 			Body: {
 				username: string;
-				password: string;
+				password?: string;
 				token?: string;
-				signature?: string;
-				authenticatorData?: string;
-				clientDataJSON?: string;
-				credentialId?: string;
-				challengeId?: string;
+				credential?: AuthenticationResponseJSON;
+				'hcaptcha-response'?: string;
+				'g-recaptcha-response'?: string;
+				'turnstile-response'?: string;
+				'frc-captcha-solution'?: string;
+				'm-captcha-response'?: string;
+				'testcaptcha-response'?: string;
 			};
-		}>('/signin', (request, reply) => this.signinApiService.signin(request, reply));
+		}>('/signin-flow', (request, reply) => this.signinApiService.signin(request, reply));
 
 		fastify.post<{
 			Body: {
 				credential?: AuthenticationResponseJSON;
+				context?: string;
 			};
 		}>('/signin-with-passkey', (request, reply) => this.signinWithPasskeyApiService.signin(request, reply));
 
diff --git a/packages/backend/src/server/api/EndpointsModule.ts b/packages/backend/src/server/api/EndpointsModule.ts
index c478bebdaf..e319d6e0a4 100644
--- a/packages/backend/src/server/api/EndpointsModule.ts
+++ b/packages/backend/src/server/api/EndpointsModule.ts
@@ -68,6 +68,8 @@ import * as ep___admin_relays_list from './endpoints/admin/relays/list.js';
 import * as ep___admin_relays_remove from './endpoints/admin/relays/remove.js';
 import * as ep___admin_resetPassword from './endpoints/admin/reset-password.js';
 import * as ep___admin_resolveAbuseUserReport from './endpoints/admin/resolve-abuse-user-report.js';
+import * as ep___admin_forwardAbuseUserReport from './endpoints/admin/forward-abuse-user-report.js';
+import * as ep___admin_updateAbuseUserReport from './endpoints/admin/update-abuse-user-report.js';
 import * as ep___admin_sendEmail from './endpoints/admin/send-email.js';
 import * as ep___admin_serverInfo from './endpoints/admin/server-info.js';
 import * as ep___admin_showModerationLogs from './endpoints/admin/show-moderation-logs.js';
@@ -473,6 +475,8 @@ const $admin_relays_list: Provider = { provide: 'ep:admin/relays/list', useClass
 const $admin_relays_remove: Provider = { provide: 'ep:admin/relays/remove', useClass: ep___admin_relays_remove.default };
 const $admin_resetPassword: Provider = { provide: 'ep:admin/reset-password', useClass: ep___admin_resetPassword.default };
 const $admin_resolveAbuseUserReport: Provider = { provide: 'ep:admin/resolve-abuse-user-report', useClass: ep___admin_resolveAbuseUserReport.default };
+const $admin_forwardAbuseUserReport: Provider = { provide: 'ep:admin/forward-abuse-user-report', useClass: ep___admin_forwardAbuseUserReport.default };
+const $admin_updateAbuseUserReport: Provider = { provide: 'ep:admin/update-abuse-user-report', useClass: ep___admin_updateAbuseUserReport.default };
 const $admin_sendEmail: Provider = { provide: 'ep:admin/send-email', useClass: ep___admin_sendEmail.default };
 const $admin_serverInfo: Provider = { provide: 'ep:admin/server-info', useClass: ep___admin_serverInfo.default };
 const $admin_showModerationLogs: Provider = { provide: 'ep:admin/show-moderation-logs', useClass: ep___admin_showModerationLogs.default };
@@ -882,6 +886,8 @@ const $reversi_verify: Provider = { provide: 'ep:reversi/verify', useClass: ep__
 		$admin_relays_remove,
 		$admin_resetPassword,
 		$admin_resolveAbuseUserReport,
+		$admin_forwardAbuseUserReport,
+		$admin_updateAbuseUserReport,
 		$admin_sendEmail,
 		$admin_serverInfo,
 		$admin_showModerationLogs,
@@ -1285,6 +1291,8 @@ const $reversi_verify: Provider = { provide: 'ep:reversi/verify', useClass: ep__
 		$admin_relays_remove,
 		$admin_resetPassword,
 		$admin_resolveAbuseUserReport,
+		$admin_forwardAbuseUserReport,
+		$admin_updateAbuseUserReport,
 		$admin_sendEmail,
 		$admin_serverInfo,
 		$admin_showModerationLogs,
diff --git a/packages/backend/src/server/api/GetterService.ts b/packages/backend/src/server/api/GetterService.ts
index 8643be0f30..419017aaf4 100644
--- a/packages/backend/src/server/api/GetterService.ts
+++ b/packages/backend/src/server/api/GetterService.ts
@@ -42,6 +42,17 @@ export class GetterService {
 		return note;
 	}
 
+	@bindThis
+	public async getNoteWithUser(noteId: MiNote['id']) {
+		const note = await this.notesRepository.findOne({ where: { id: noteId }, relations: ['user'] });
+
+		if (note == null) {
+			throw new IdentifiableError('9725d0ce-ba28-4dde-95a7-2cbb2c15de24', 'No such note.');
+		}
+
+		return note;
+	}
+
 	/**
 	 * Get note for API processing
 	 */
diff --git a/packages/backend/src/server/api/SigninApiService.ts b/packages/backend/src/server/api/SigninApiService.ts
index 1a4ce0a54c..fa9155d82d 100644
--- a/packages/backend/src/server/api/SigninApiService.ts
+++ b/packages/backend/src/server/api/SigninApiService.ts
@@ -6,12 +6,14 @@
 import { Inject, Injectable } from '@nestjs/common';
 import bcrypt from 'bcryptjs';
 import * as argon2 from 'argon2';
-import * as OTPAuth from 'otpauth';
 import { IsNull } from 'typeorm';
+import * as Misskey from 'misskey-js';
 import { DI } from '@/di-symbols.js';
 import type {
+	MiMeta,
 	SigninsRepository,
 	UserProfilesRepository,
+	UserSecurityKeysRepository,
 	UsersRepository,
 } from '@/models/_.js';
 import type { Config } from '@/config.js';
@@ -21,8 +23,9 @@ import { IdService } from '@/core/IdService.js';
 import { bindThis } from '@/decorators.js';
 import { WebAuthnService } from '@/core/WebAuthnService.js';
 import { UserAuthService } from '@/core/UserAuthService.js';
+import { CaptchaService } from '@/core/CaptchaService.js';
+import { FastifyReplyError } from '@/misc/fastify-reply-error.js';
 import { isSystemAccount } from '@/misc/is-system-account.js';
-import type { MiMeta } from '@/models/_.js';
 import { SkRateLimiterService } from '@/server/api/SkRateLimiterService.js';
 import { sendRateLimitHeaders } from '@/misc/rate-limit-utils.js';
 import { SigninService } from './SigninService.js';
@@ -44,6 +47,9 @@ export class SigninApiService {
 		@Inject(DI.userProfilesRepository)
 		private userProfilesRepository: UserProfilesRepository,
 
+		@Inject(DI.userSecurityKeysRepository)
+		private userSecurityKeysRepository: UserSecurityKeysRepository,
+
 		@Inject(DI.signinsRepository)
 		private signinsRepository: SigninsRepository,
 
@@ -52,6 +58,7 @@ export class SigninApiService {
 		private signinService: SigninService,
 		private userAuthService: UserAuthService,
 		private webAuthnService: WebAuthnService,
+		private captchaService: CaptchaService,
 	) {
 	}
 
@@ -60,9 +67,15 @@ export class SigninApiService {
 		request: FastifyRequest<{
 			Body: {
 				username: string;
-				password: string;
+				password?: string;
 				token?: string;
 				credential?: AuthenticationResponseJSON;
+				'hcaptcha-response'?: string;
+				'g-recaptcha-response'?: string;
+				'turnstile-response'?: string;
+				'frc-captcha-solution'?: string;
+				'm-captcha-response'?: string;
+				'testcaptcha-response'?: string;
 			};
 		}>,
 		reply: FastifyReply,
@@ -101,11 +114,6 @@ export class SigninApiService {
 			return;
 		}
 
-		if (typeof password !== 'string') {
-			reply.code(400);
-			return;
-		}
-
 		if (token != null && typeof token !== 'string') {
 			reply.code(400);
 			return;
@@ -136,6 +144,27 @@ export class SigninApiService {
 		}
 
 		const profile = await this.userProfilesRepository.findOneByOrFail({ userId: user.id });
+		const securityKeysAvailable = await this.userSecurityKeysRepository.countBy({ userId: user.id }).then(result => result >= 1);
+
+		if (password == null) {
+			reply.code(200);
+			if (profile.twoFactorEnabled) {
+				return {
+					finished: false,
+					next: 'password',
+				} satisfies Misskey.entities.SigninFlowResponse;
+			} else {
+				return {
+					finished: false,
+					next: 'captcha',
+				} satisfies Misskey.entities.SigninFlowResponse;
+			}
+		}
+
+		if (typeof password !== 'string') {
+			reply.code(400);
+			return;
+		}
 
 		if (!user.approved && this.meta.approvalRequiredForSignup) {
 			reply.code(403);
@@ -151,7 +180,7 @@ export class SigninApiService {
 		// Compare password
 		const same = await argon2.verify(profile.password!, password) || bcrypt.compareSync(password, profile.password!);
 
-		const fail = async (status?: number, failure?: { id: string }) => {
+		const fail = async (status?: number, failure?: { id: string; }) => {
 			// Append signin history
 			await this.signinsRepository.insert({
 				id: this.idService.gen(),
@@ -165,6 +194,44 @@ export class SigninApiService {
 		};
 
 		if (!profile.twoFactorEnabled) {
+			if (process.env.NODE_ENV !== 'test') {
+				if (this.meta.enableHcaptcha && this.meta.hcaptchaSecretKey) {
+					await this.captchaService.verifyHcaptcha(this.meta.hcaptchaSecretKey, body['hcaptcha-response']).catch(err => {
+						throw new FastifyReplyError(400, err);
+					});
+				}
+
+				if (this.meta.enableMcaptcha && this.meta.mcaptchaSecretKey && this.meta.mcaptchaSitekey && this.meta.mcaptchaInstanceUrl) {
+					await this.captchaService.verifyMcaptcha(this.meta.mcaptchaSecretKey, this.meta.mcaptchaSitekey, this.meta.mcaptchaInstanceUrl, body['m-captcha-response']).catch(err => {
+						throw new FastifyReplyError(400, err);
+					});
+				}
+
+				if (this.meta.enableFC && this.meta.fcSecretKey) {
+					await this.captchaService.verifyFriendlyCaptcha(this.meta.fcSecretKey, body['frc-captcha-solution']).catch(err => {
+						throw new FastifyReplyError(400, err);
+					});
+				}
+
+				if (this.meta.enableRecaptcha && this.meta.recaptchaSecretKey) {
+					await this.captchaService.verifyRecaptcha(this.meta.recaptchaSecretKey, body['g-recaptcha-response']).catch(err => {
+						throw new FastifyReplyError(400, err);
+					});
+				}
+
+				if (this.meta.enableTurnstile && this.meta.turnstileSecretKey) {
+					await this.captchaService.verifyTurnstile(this.meta.turnstileSecretKey, body['turnstile-response']).catch(err => {
+						throw new FastifyReplyError(400, err);
+					});
+				}
+
+				if (this.meta.enableTestcaptcha) {
+					await this.captchaService.verifyTestcaptcha(body['testcaptcha-response']).catch(err => {
+						throw new FastifyReplyError(400, err);
+					});
+				}
+			}
+
 			if (same) {
 				if (profile.password!.startsWith('$2')) {
 					const newHash = await argon2.hash(password);
@@ -223,7 +290,7 @@ export class SigninApiService {
 					id: '93b86c4b-72f9-40eb-9815-798928603d1e',
 				});
 			}
-		} else {
+		} else if (securityKeysAvailable) {
 			if (!same && !profile.usePasswordLessLogin) {
 				return await fail(403, {
 					id: '932c904e-9460-45b7-9ce6-7ed33be7eb2c',
@@ -233,7 +300,23 @@ export class SigninApiService {
 			const authRequest = await this.webAuthnService.initiateAuthentication(user.id);
 
 			reply.code(200);
-			return authRequest;
+			return {
+				finished: false,
+				next: 'passkey',
+				authRequest,
+			} satisfies Misskey.entities.SigninFlowResponse;
+		} else {
+			if (!same || !profile.twoFactorEnabled) {
+				return await fail(403, {
+					id: '932c904e-9460-45b7-9ce6-7ed33be7eb2c',
+				});
+			} else {
+				reply.code(200);
+				return {
+					finished: false,
+					next: 'totp',
+				} satisfies Misskey.entities.SigninFlowResponse;
+			}
 		}
 		// never get here
 	}
diff --git a/packages/backend/src/server/api/SigninService.ts b/packages/backend/src/server/api/SigninService.ts
index 70306c3113..640356b50c 100644
--- a/packages/backend/src/server/api/SigninService.ts
+++ b/packages/backend/src/server/api/SigninService.ts
@@ -4,13 +4,16 @@
  */
 
 import { Inject, Injectable } from '@nestjs/common';
+import * as Misskey from 'misskey-js';
 import { DI } from '@/di-symbols.js';
-import type { SigninsRepository } from '@/models/_.js';
+import type { SigninsRepository, UserProfilesRepository } from '@/models/_.js';
 import { IdService } from '@/core/IdService.js';
 import type { MiLocalUser } from '@/models/User.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { SigninEntityService } from '@/core/entities/SigninEntityService.js';
 import { bindThis } from '@/decorators.js';
+import { EmailService } from '@/core/EmailService.js';
+import { NotificationService } from '@/core/NotificationService.js';
 import type { FastifyRequest, FastifyReply } from 'fastify';
 
 @Injectable()
@@ -19,7 +22,12 @@ export class SigninService {
 		@Inject(DI.signinsRepository)
 		private signinsRepository: SigninsRepository,
 
+		@Inject(DI.userProfilesRepository)
+		private userProfilesRepository: UserProfilesRepository,
+
 		private signinEntityService: SigninEntityService,
+		private emailService: EmailService,
+		private notificationService: NotificationService,
 		private idService: IdService,
 		private globalEventService: GlobalEventService,
 	) {
@@ -28,7 +36,8 @@ export class SigninService {
 	@bindThis
 	public signin(request: FastifyRequest, reply: FastifyReply, user: MiLocalUser) {
 		setImmediate(async () => {
-			// Append signin history
+			this.notificationService.createNotification(user.id, 'login', {});
+
 			const record = await this.signinsRepository.insertOne({
 				id: this.idService.gen(),
 				userId: user.id,
@@ -37,15 +46,22 @@ export class SigninService {
 				success: true,
 			});
 
-			// Publish signin event
 			this.globalEventService.publishMainStream(user.id, 'signin', await this.signinEntityService.pack(record));
+
+			const profile = await this.userProfilesRepository.findOneByOrFail({ userId: user.id });
+			if (profile.email && profile.emailVerified) {
+				this.emailService.sendEmail(profile.email, 'New login / ログインがありました',
+					'There is a new login. If you do not recognize this login, update the security status of your account, including changing your password. / 新しいログインがありました。このログインに心当たりがない場合は、パスワードを変更するなど、アカウントのセキュリティ状態を更新してください。',
+					'There is a new login. If you do not recognize this login, update the security status of your account, including changing your password. / 新しいログインがありました。このログインに心当たりがない場合は、パスワードを変更するなど、アカウントのセキュリティ状態を更新してください。');
+			}
 		});
 
 		reply.code(200);
 		return {
+			finished: true,
 			id: user.id,
-			i: user.token,
-		};
+			i: user.token!,
+		} satisfies Misskey.entities.SigninFlowResponse;
 	}
 }
 
diff --git a/packages/backend/src/server/api/SignupApiService.ts b/packages/backend/src/server/api/SignupApiService.ts
index db860d710a..7aea6a0e56 100644
--- a/packages/backend/src/server/api/SignupApiService.ts
+++ b/packages/backend/src/server/api/SignupApiService.ts
@@ -73,6 +73,7 @@ export class SignupApiService {
 				'turnstile-response'?: string;
 				'm-captcha-response'?: string;
 				'frc-captcha-solution'?: string;
+				'testcaptcha-response'?: string;
 			}
 		}>,
 		reply: FastifyReply,
@@ -111,6 +112,12 @@ export class SignupApiService {
 					throw new FastifyReplyError(400, err);
 				});
 			}
+
+			if (this.meta.enableTestcaptcha) {
+				await this.captchaService.verifyTestcaptcha(body['testcaptcha-response']).catch(err => {
+					throw new FastifyReplyError(400, err);
+				});
+			}
 		}
 
 		const username = body['username'];
diff --git a/packages/backend/src/server/api/endpoints.ts b/packages/backend/src/server/api/endpoints.ts
index 269afbf14b..b4f36234f0 100644
--- a/packages/backend/src/server/api/endpoints.ts
+++ b/packages/backend/src/server/api/endpoints.ts
@@ -75,6 +75,8 @@ import * as ep___admin_relays_list from './endpoints/admin/relays/list.js';
 import * as ep___admin_relays_remove from './endpoints/admin/relays/remove.js';
 import * as ep___admin_resetPassword from './endpoints/admin/reset-password.js';
 import * as ep___admin_resolveAbuseUserReport from './endpoints/admin/resolve-abuse-user-report.js';
+import * as ep___admin_forwardAbuseUserReport from './endpoints/admin/forward-abuse-user-report.js';
+import * as ep___admin_updateAbuseUserReport from './endpoints/admin/update-abuse-user-report.js';
 import * as ep___admin_sendEmail from './endpoints/admin/send-email.js';
 import * as ep___admin_serverInfo from './endpoints/admin/server-info.js';
 import * as ep___admin_showModerationLogs from './endpoints/admin/show-moderation-logs.js';
@@ -478,6 +480,8 @@ const eps = [
 	['admin/relays/remove', ep___admin_relays_remove],
 	['admin/reset-password', ep___admin_resetPassword],
 	['admin/resolve-abuse-user-report', ep___admin_resolveAbuseUserReport],
+	['admin/forward-abuse-user-report', ep___admin_forwardAbuseUserReport],
+	['admin/update-abuse-user-report', ep___admin_updateAbuseUserReport],
 	['admin/send-email', ep___admin_sendEmail],
 	['admin/server-info', ep___admin_serverInfo],
 	['admin/show-moderation-logs', ep___admin_showModerationLogs],
diff --git a/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts b/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts
index cf3f257ca6..0dbfaae054 100644
--- a/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts
+++ b/packages/backend/src/server/api/endpoints/admin/abuse-user-reports.ts
@@ -71,9 +71,22 @@ export const meta = {
 				},
 				assignee: {
 					type: 'object',
-					nullable: true, optional: true,
+					nullable: true, optional: false,
 					ref: 'UserDetailedNotMe',
 				},
+				forwarded: {
+					type: 'boolean',
+					nullable: false, optional: false,
+				},
+				resolvedAs: {
+					type: 'string',
+					nullable: true, optional: false,
+					enum: ['accept', 'reject', null],
+				},
+				moderationNote: {
+					type: 'string',
+					nullable: false, optional: false,
+				},
 			},
 		},
 	},
@@ -88,7 +101,6 @@ export const paramDef = {
 		state: { type: 'string', nullable: true, default: null },
 		reporterOrigin: { type: 'string', enum: ['combined', 'local', 'remote'], default: 'combined' },
 		targetUserOrigin: { type: 'string', enum: ['combined', 'local', 'remote'], default: 'combined' },
-		forwarded: { type: 'boolean', default: false },
 	},
 	required: [],
 } as const;
diff --git a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
index 7754899b95..53b1c4c4ec 100644
--- a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
@@ -3,33 +3,36 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { UsersRepository } from '@/models/_.js';
 import { MiAccessToken, MiUser } from '@/models/_.js';
 import { SignupService } from '@/core/SignupService.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { InstanceActorService } from '@/core/InstanceActorService.js';
 import { localUsernameSchema, passwordSchema } from '@/models/User.js';
+import { DI } from '@/di-symbols.js';
+import type { Config } from '@/config.js';
+import { ApiError } from '@/server/api/error.js';
 import { Packed } from '@/misc/json-schema.js';
 import { RoleService } from '@/core/RoleService.js';
-import { ApiError } from '@/server/api/error.js';
 
 export const meta = {
 	tags: ['admin'],
 
-	res: {
-		type: 'object',
-		optional: false, nullable: false,
-		ref: 'MeDetailed',
-		properties: {
-			token: {
-				type: 'string',
-				optional: false, nullable: false,
-			},
+	errors: {
+		accessDenied: {
+			message: 'Access denied.',
+			code: 'ACCESS_DENIED',
+			id: '1fb7cb09-d46a-4fff-b8df-057708cce513',
+		},
+
+		wrongInitialPassword: {
+			message: 'Initial password is incorrect.',
+			code: 'INCORRECT_INITIAL_PASSWORD',
+			id: '97147c55-1ae1-4f6f-91d6-e1c3e0e76d62',
 		},
-	},
 
-	errors: {
 		// From ApiCallService.ts
 		noCredential: {
 			message: 'Credential required.',
@@ -51,6 +54,18 @@ export const meta = {
 		},
 	},
 
+	res: {
+		type: 'object',
+		optional: false, nullable: false,
+		ref: 'MeDetailed',
+		properties: {
+			token: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+		},
+	},
+
 	// Required token permissions, but we need to check them manually.
 	// ApiCallService checks access in a way that would prevent creating the first account.
 	softPermissions: [
@@ -64,6 +79,7 @@ export const paramDef = {
 	properties: {
 		username: localUsernameSchema,
 		password: passwordSchema,
+		setupPassword: { type: 'string', nullable: true },
 	},
 	required: ['username', 'password'],
 } as const;
@@ -71,13 +87,49 @@ export const paramDef = {
 @Injectable()
 export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
 	constructor(
+		@Inject(DI.config)
+		private config: Config,
+
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
 		private roleService: RoleService,
 		private userEntityService: UserEntityService,
 		private signupService: SignupService,
 		private instanceActorService: InstanceActorService,
 	) {
 		super(meta, paramDef, async (ps, _me, token) => {
-			await this.ensurePermissions(_me, token);
+			const me = _me ? await this.usersRepository.findOneByOrFail({ id: _me.id }) : null;
+			const realUsers = await this.instanceActorService.realLocalUsersPresent();
+
+			if (!realUsers && me == null && token == null) {
+				// 初回セットアップの場合
+				if (this.config.setupPassword != null) {
+					// 初期パスワードが設定されている場合
+					if (ps.setupPassword !== this.config.setupPassword) {
+						// 初期パスワードが違う場合
+						throw new ApiError(meta.errors.wrongInitialPassword);
+					}
+				} else if (ps.setupPassword != null && ps.setupPassword.trim() !== '') {
+					// 初期パスワードが設定されていないのに初期パスワードが入力された場合
+					throw new ApiError(meta.errors.wrongInitialPassword);
+				}
+			} else {
+				if (token && !meta.softPermissions.every(p => token.permission.includes(p))) {
+					// Tokens have scoped permissions which may be *less* than the user's official role, so we need to check.
+					throw new ApiError(meta.errors.noPermission);
+				}
+
+				if (me && !await this.roleService.isAdministrator(me)) {
+					// Only administrators (including root) can create users.
+					throw new ApiError(meta.errors.noAdmin);
+				}
+
+				// Anonymous access is only allowed for initial instance setup (this check may be redundant)
+				if (!me && realUsers) {
+					throw new ApiError(meta.errors.noCredential);
+				}
+			}
 
 			const { account, secret } = await this.signupService.signup({
 				username: ps.username,
@@ -96,21 +148,4 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			return res;
 		});
 	}
-
-	private async ensurePermissions(me: MiUser | null, token: MiAccessToken | null): Promise<void> {
-		// Tokens have scoped permissions which may be *less* than the user's official role, so we need to check.
-		if (token && !meta.softPermissions.every(p => token.permission.includes(p))) {
-			throw new ApiError(meta.errors.noPermission);
-		}
-
-		// Only administrators (including root) can create users.
-		if (me && !await this.roleService.isAdministrator(me)) {
-			throw new ApiError(meta.errors.noAdmin);
-		}
-
-		// Anonymous access is only allowed for initial instance setup.
-		if (!me && await this.instanceActorService.realLocalUsersPresent()) {
-			throw new ApiError(meta.errors.noCredential);
-		}
-	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts b/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
index 01dea703a3..ece1984cff 100644
--- a/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
+++ b/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
@@ -46,7 +46,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new Error('cannot delete a root account');
 			}
 
-			await this.deleteAccoountService.deleteAccount(user);
+			await this.deleteAccoountService.deleteAccount(user, me);
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/announcements/create.ts b/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
index 2dae1df87d..b8bfda73a4 100644
--- a/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/announcements/create.ts
@@ -55,7 +55,7 @@ export const paramDef = {
 	properties: {
 		title: { type: 'string', minLength: 1 },
 		text: { type: 'string', minLength: 1 },
-		imageUrl: { type: 'string', nullable: true, minLength: 1 },
+		imageUrl: { type: 'string', nullable: true, minLength: 0 },
 		icon: { type: 'string', enum: ['info', 'warning', 'error', 'success'], default: 'info' },
 		display: { type: 'string', enum: ['normal', 'banner', 'dialog'], default: 'normal' },
 		forExistingUsers: { type: 'boolean', default: false },
@@ -76,7 +76,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				updatedAt: null,
 				title: ps.title,
 				text: ps.text,
-				imageUrl: ps.imageUrl,
+				/* eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing -- 空の文字列の場合、nullを渡すようにするため */
+				imageUrl: ps.imageUrl || null,
 				icon: ps.icon,
 				display: ps.display,
 				forExistingUsers: ps.forExistingUsers,
diff --git a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts
index fd21309818..87d80cbe80 100644
--- a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts
@@ -6,6 +6,7 @@
 import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { AvatarDecorationService } from '@/core/AvatarDecorationService.js';
+import { IdService } from '@/core/IdService.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -13,6 +14,49 @@ export const meta = {
 	requireCredential: true,
 	requireRolePolicy: 'canManageAvatarDecorations',
 	kind: 'write:admin:avatar-decorations',
+
+	res: {
+		type: 'object',
+		optional: false, nullable: false,
+		properties: {
+			id: {
+				type: 'string',
+				optional: false, nullable: false,
+				format: 'id',
+			},
+			createdAt: {
+				type: 'string',
+				optional: false, nullable: false,
+				format: 'date-time',
+			},
+			updatedAt: {
+				type: 'string',
+				optional: false, nullable: true,
+				format: 'date-time',
+			},
+			name: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			description: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			url: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			roleIdsThatCanBeUsedThisDecoration: {
+				type: 'array',
+				optional: false, nullable: false,
+				items: {
+					type: 'string',
+					optional: false, nullable: false,
+					format: 'id',
+				},
+			},
+		},
+	},
 } as const;
 
 export const paramDef = {
@@ -32,14 +76,25 @@ export const paramDef = {
 export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
 	constructor(
 		private avatarDecorationService: AvatarDecorationService,
+		private idService: IdService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			await this.avatarDecorationService.create({
+			const created = await this.avatarDecorationService.create({
 				name: ps.name,
 				description: ps.description,
 				url: ps.url,
 				roleIdsThatCanBeUsedThisDecoration: ps.roleIdsThatCanBeUsedThisDecoration,
 			}, me);
+
+			return {
+				id: created.id,
+				createdAt: this.idService.parse(created.id).date.toISOString(),
+				updatedAt: null,
+				name: created.name,
+				description: created.description,
+				url: created.url,
+				roleIdsThatCanBeUsedThisDecoration: created.roleIdsThatCanBeUsedThisDecoration,
+			};
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts
index aee90023e1..d785f085ac 100644
--- a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts
@@ -4,10 +4,7 @@
  */
 
 import { Inject, Injectable } from '@nestjs/common';
-import type { AnnouncementsRepository, AnnouncementReadsRepository } from '@/models/_.js';
-import type { MiAnnouncement } from '@/models/Announcement.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import { QueryService } from '@/core/QueryService.js';
 import { DI } from '@/di-symbols.js';
 import { IdService } from '@/core/IdService.js';
 import { AvatarDecorationService } from '@/core/AvatarDecorationService.js';
diff --git a/packages/backend/src/server/api/endpoints/admin/delete-account.ts b/packages/backend/src/server/api/endpoints/admin/delete-account.ts
index b6f0f22d60..9065a71f6a 100644
--- a/packages/backend/src/server/api/endpoints/admin/delete-account.ts
+++ b/packages/backend/src/server/api/endpoints/admin/delete-account.ts
@@ -33,13 +33,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 		private deleteAccountService: DeleteAccountService,
 	) {
-		super(meta, paramDef, async (ps) => {
+		super(meta, paramDef, async (ps, me) => {
 			const user = await this.usersRepository.findOneByOrFail({ id: ps.userId });
 			if (user.isDeleted) {
 				return;
 			}
 
-			await this.deleteAccountService.deleteAccount(user);
+			await this.deleteAccountService.deleteAccount(user, me);
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/update.ts b/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
index 3caa0f84a3..071ddbef18 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
@@ -6,7 +6,7 @@
 import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { CustomEmojiService } from '@/core/CustomEmojiService.js';
-import type { DriveFilesRepository } from '@/models/_.js';
+import type { DriveFilesRepository, MiEmoji } from '@/models/_.js';
 import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../../error.js';
 
@@ -79,25 +79,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				if (driveFile == null) throw new ApiError(meta.errors.noSuchFile);
 			}
 
-			let emojiId;
-			if (ps.id) {
-				emojiId = ps.id;
-				const emoji = await this.customEmojiService.getEmojiById(ps.id);
-				if (!emoji) throw new ApiError(meta.errors.noSuchEmoji);
-				if (nameNfc && (nameNfc !== emoji.name)) {
-					const isDuplicate = await this.customEmojiService.checkDuplicate(nameNfc);
-					if (isDuplicate) throw new ApiError(meta.errors.sameNameEmojiExists);
-				}
-			} else {
-				if (!nameNfc) throw new Error('Invalid Params unexpectedly passed. This is a BUG. Please report it to the development team.');
-				const emoji = await this.customEmojiService.getEmojiByName(nameNfc);
-				if (!emoji) throw new ApiError(meta.errors.noSuchEmoji);
-				emojiId = emoji.id;
-			}
+			// JSON schemeのanyOfの型変換がうまくいっていないらしい
+			const required = { id: ps.id, name: nameNfc } as
+				| { id: MiEmoji['id']; name?: string }
+				| { id?: MiEmoji['id']; name: string };
 
-			await this.customEmojiService.update(emojiId, {
+			const error = await this.customEmojiService.update({
+				...required,
 				driveFile,
-				name: nameNfc,
 				category: ps.category?.normalize('NFC'),
 				aliases: ps.aliases?.map(a => a.normalize('NFC')),
 				license: ps.license,
@@ -105,6 +94,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				localOnly: ps.localOnly,
 				roleIdsThatCanBeUsedThisEmojiAsReaction: ps.roleIdsThatCanBeUsedThisEmojiAsReaction,
 			}, me);
+
+			switch (error) {
+				case null: return;
+				case 'NO_SUCH_EMOJI': throw new ApiError(meta.errors.noSuchEmoji);
+				case 'SAME_NAME_EMOJI_EXISTS': throw new ApiError(meta.errors.sameNameEmojiExists);
+			}
+			// 網羅性チェック
+			const mustBeNever: never = error;
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/forward-abuse-user-report.ts b/packages/backend/src/server/api/endpoints/admin/forward-abuse-user-report.ts
new file mode 100644
index 0000000000..3e42c91fed
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/forward-abuse-user-report.ts
@@ -0,0 +1,55 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { AbuseUserReportsRepository } from '@/models/_.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { AbuseReportService } from '@/core/AbuseReportService.js';
+
+export const meta = {
+	tags: ['admin'],
+
+	requireCredential: true,
+	requireModerator: true,
+	kind: 'write:admin:resolve-abuse-user-report',
+
+	errors: {
+		noSuchAbuseReport: {
+			message: 'No such abuse report.',
+			code: 'NO_SUCH_ABUSE_REPORT',
+			id: '8763e21b-d9bc-40be-acf6-54c1a6986493',
+			kind: 'server',
+			httpStatusCode: 404,
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		reportId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['reportId'],
+} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		@Inject(DI.abuseUserReportsRepository)
+		private abuseUserReportsRepository: AbuseUserReportsRepository,
+		private abuseReportService: AbuseReportService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const report = await this.abuseUserReportsRepository.findOneBy({ id: ps.reportId });
+			if (!report) {
+				throw new ApiError(meta.errors.noSuchAbuseReport);
+			}
+
+			await this.abuseReportService.forward(report.id, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/meta.ts b/packages/backend/src/server/api/endpoints/admin/meta.ts
index 6e368eff43..6495e3b7da 100644
--- a/packages/backend/src/server/api/endpoints/admin/meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/meta.ts
@@ -81,6 +81,10 @@ export const meta = {
 				type: 'string',
 				optional: false, nullable: true,
 			},
+			enableTestcaptcha: {
+				type: 'boolean',
+				optional: false, nullable: false,
+			},
 			swPublickey: {
 				type: 'string',
 				optional: false, nullable: true,
@@ -189,6 +193,13 @@ export const meta = {
 					type: 'string',
 				},
 			},
+			prohibitedWordsForNameOfUser: {
+				type: 'array',
+				optional: false, nullable: false,
+				items: {
+					type: 'string',
+				},
+			},
 			bannedEmailDomains: {
 				type: 'array',
 				optional: true, nullable: false,
@@ -368,6 +379,10 @@ export const meta = {
 				type: 'boolean',
 				optional: false, nullable: false,
 			},
+			enableStatsForFederatedInstances: {
+				type: 'boolean',
+				optional: false, nullable: false,
+			},
 			enableServerMachineStats: {
 				type: 'boolean',
 				optional: false, nullable: false,
@@ -614,6 +629,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				turnstileSiteKey: instance.turnstileSiteKey,
 				enableFC: instance.enableFC,
 				fcSiteKey: instance.fcSiteKey,
+				enableTestcaptcha: instance.enableTestcaptcha,
 				swPublickey: instance.swPublicKey,
 				themeColor: instance.themeColor,
 				mascotImageUrl: instance.mascotImageUrl,
@@ -642,6 +658,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				mediaSilencedHosts: instance.mediaSilencedHosts,
 				sensitiveWords: instance.sensitiveWords,
 				prohibitedWords: instance.prohibitedWords,
+				prohibitedWordsForNameOfUser: instance.prohibitedWordsForNameOfUser,
 				preservedUsernames: instance.preservedUsernames,
 				bubbleInstances: instance.bubbleInstances,
 				hcaptchaSecretKey: instance.hcaptchaSecretKey,
@@ -688,6 +705,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				truemailAuthKey: instance.truemailAuthKey,
 				enableChartsForRemoteUser: instance.enableChartsForRemoteUser,
 				enableChartsForFederatedInstances: instance.enableChartsForFederatedInstances,
+				enableStatsForFederatedInstances: instance.enableStatsForFederatedInstances,
 				enableServerMachineStats: instance.enableServerMachineStats,
 				enableAchievements: instance.enableAchievements,
 				enableIdenticonGeneration: instance.enableIdenticonGeneration,
diff --git a/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts b/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts
index 9b79100fcf..554d324ff2 100644
--- a/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts
+++ b/packages/backend/src/server/api/endpoints/admin/resolve-abuse-user-report.ts
@@ -32,7 +32,7 @@ export const paramDef = {
 	type: 'object',
 	properties: {
 		reportId: { type: 'string', format: 'misskey:id' },
-		forward: { type: 'boolean', default: false },
+		resolvedAs: { type: 'string', enum: ['accept', 'reject', null], nullable: true },
 	},
 	required: ['reportId'],
 } as const;
@@ -50,7 +50,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.noSuchAbuseReport);
 			}
 
-			await this.abuseReportService.resolve([{ reportId: report.id, forward: ps.forward }], me);
+			await this.abuseReportService.resolve([{ reportId: report.id, resolvedAs: ps.resolvedAs ?? null }], me);
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/show-users.ts b/packages/backend/src/server/api/endpoints/admin/show-users.ts
index 5f16519403..cc65ed2cf0 100644
--- a/packages/backend/src/server/api/endpoints/admin/show-users.ts
+++ b/packages/backend/src/server/api/endpoints/admin/show-users.ts
@@ -72,13 +72,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 					break;
 				}
 				case 'moderator': {
-					const moderatorIds = await this.roleService.getModeratorIds(false);
+					const moderatorIds = await this.roleService.getModeratorIds({ includeAdmins: false });
 					if (moderatorIds.length === 0) return [];
 					query.where('user.id IN (:...moderatorIds)', { moderatorIds: moderatorIds });
 					break;
 				}
 				case 'adminOrModerator': {
-					const adminOrModeratorIds = await this.roleService.getModeratorIds();
+					const adminOrModeratorIds = await this.roleService.getModeratorIds({ includeAdmins: true });
 					if (adminOrModeratorIds.length === 0) return [];
 					query.where('user.id IN (:...adminOrModeratorIds)', { adminOrModeratorIds: adminOrModeratorIds });
 					break;
diff --git a/packages/backend/src/server/api/endpoints/admin/update-abuse-user-report.ts b/packages/backend/src/server/api/endpoints/admin/update-abuse-user-report.ts
new file mode 100644
index 0000000000..73d4b843f0
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/update-abuse-user-report.ts
@@ -0,0 +1,58 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { AbuseUserReportsRepository } from '@/models/_.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { AbuseReportService } from '@/core/AbuseReportService.js';
+
+export const meta = {
+	tags: ['admin'],
+
+	requireCredential: true,
+	requireModerator: true,
+	kind: 'write:admin:resolve-abuse-user-report',
+
+	errors: {
+		noSuchAbuseReport: {
+			message: 'No such abuse report.',
+			code: 'NO_SUCH_ABUSE_REPORT',
+			id: '15f51cf5-46d1-4b1d-a618-b35bcbed0662',
+			kind: 'server',
+			httpStatusCode: 404,
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		reportId: { type: 'string', format: 'misskey:id' },
+		moderationNote: { type: 'string' },
+	},
+	required: ['reportId'],
+} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		@Inject(DI.abuseUserReportsRepository)
+		private abuseUserReportsRepository: AbuseUserReportsRepository,
+		private abuseReportService: AbuseReportService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const report = await this.abuseUserReportsRepository.findOneBy({ id: ps.reportId });
+			if (!report) {
+				throw new ApiError(meta.errors.noSuchAbuseReport);
+			}
+
+			await this.abuseReportService.update(report.id, {
+				moderationNote: ps.moderationNote,
+			}, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/update-meta.ts b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
index 98760bbcc3..72f428d85f 100644
--- a/packages/backend/src/server/api/endpoints/admin/update-meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
@@ -46,6 +46,11 @@ export const paramDef = {
 				type: 'string',
 			},
 		},
+		prohibitedWordsForNameOfUser: {
+			type: 'array', nullable: true, items: {
+				type: 'string',
+			},
+		},
 		themeColor: { type: 'string', nullable: true, pattern: '^#[0-9a-fA-F]{6}$' },
 		mascotImageUrl: { type: 'string', nullable: true },
 		bannerUrl: { type: 'string', nullable: true },
@@ -84,6 +89,7 @@ export const paramDef = {
 		enableFC: { type: 'boolean' },
 		fcSiteKey: { type: 'string', nullable: true },
 		fcSecretKey: { type: 'string', nullable: true },
+		enableTestcaptcha: { type: 'boolean' },
 		sensitiveMediaDetection: { type: 'string', enum: ['none', 'all', 'local', 'remote'] },
 		sensitiveMediaDetectionSensitivity: { type: 'string', enum: ['medium', 'low', 'high', 'veryLow', 'veryHigh'] },
 		setSensitiveFlagAutomatically: { type: 'boolean' },
@@ -140,6 +146,7 @@ export const paramDef = {
 		truemailAuthKey: { type: 'string', nullable: true },
 		enableChartsForRemoteUser: { type: 'boolean' },
 		enableChartsForFederatedInstances: { type: 'boolean' },
+		enableStatsForFederatedInstances: { type: 'boolean' },
 		enableServerMachineStats: { type: 'boolean' },
 		enableAchievements: { type: 'boolean' },
 		enableIdenticonGeneration: { type: 'boolean' },
@@ -230,6 +237,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			if (Array.isArray(ps.prohibitedWords)) {
 				set.prohibitedWords = ps.prohibitedWords.filter(Boolean);
 			}
+			if (Array.isArray(ps.prohibitedWordsForNameOfUser)) {
+				set.prohibitedWordsForNameOfUser = ps.prohibitedWordsForNameOfUser.filter(Boolean);
+			}
 			if (Array.isArray(ps.silencedHosts)) {
 				let lastValue = '';
 				set.silencedHosts = ps.silencedHosts.sort().filter((h) => {
@@ -390,6 +400,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				set.enableFC = ps.enableFC;
 			}
 
+			if (ps.enableTestcaptcha !== undefined) {
+				set.enableTestcaptcha = ps.enableTestcaptcha;
+			}
+
 			if (ps.fcSiteKey !== undefined) {
 				set.fcSiteKey = ps.fcSiteKey;
 			}
@@ -610,6 +624,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				set.enableChartsForFederatedInstances = ps.enableChartsForFederatedInstances;
 			}
 
+			if (ps.enableStatsForFederatedInstances !== undefined) {
+				set.enableStatsForFederatedInstances = ps.enableStatsForFederatedInstances;
+			}
+
 			if (ps.enableServerMachineStats !== undefined) {
 				set.enableServerMachineStats = ps.enableServerMachineStats;
 			}
@@ -709,7 +727,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			}
 
 			if (Array.isArray(ps.federationHosts)) {
-				set.blockedHosts = ps.federationHosts.filter(Boolean).map(x => x.toLowerCase());
+				set.federationHosts = ps.federationHosts.filter(Boolean).map(x => x.toLowerCase());
 			}
 
 			const before = await this.metaService.fetch(true);
diff --git a/packages/backend/src/server/api/endpoints/ap/show.ts b/packages/backend/src/server/api/endpoints/ap/show.ts
index 4232bc6e39..616a77e337 100644
--- a/packages/backend/src/server/api/endpoints/ap/show.ts
+++ b/packages/backend/src/server/api/endpoints/ap/show.ts
@@ -137,6 +137,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			if (local != null) return local;
 		}
 
+		// 同一ユーザーの情報を再度処理するので、使用済みのresolverを再利用してはいけない
 		return await this.mergePack(
 			me,
 			isActor(object) ? await this.apPersonService.createPerson(getApId(object)) : null,
diff --git a/packages/backend/src/server/api/endpoints/flash/featured.ts b/packages/backend/src/server/api/endpoints/flash/featured.ts
index 2e8cbffe2a..ad1f35055a 100644
--- a/packages/backend/src/server/api/endpoints/flash/featured.ts
+++ b/packages/backend/src/server/api/endpoints/flash/featured.ts
@@ -8,6 +8,7 @@ import type { FlashsRepository } from '@/models/_.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { FlashEntityService } from '@/core/entities/FlashEntityService.js';
 import { DI } from '@/di-symbols.js';
+import { FlashService } from '@/core/FlashService.js';
 
 export const meta = {
 	tags: ['flash'],
@@ -33,26 +34,25 @@ export const meta = {
 
 export const paramDef = {
 	type: 'object',
-	properties: {},
+	properties: {
+		offset: { type: 'integer', minimum: 0, default: 0 },
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+	},
 	required: [],
 } as const;
 
 @Injectable()
 export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
 	constructor(
-		@Inject(DI.flashsRepository)
-		private flashsRepository: FlashsRepository,
-
+		private flashService: FlashService,
 		private flashEntityService: FlashEntityService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const query = this.flashsRepository.createQueryBuilder('flash')
-				.andWhere('flash.likedCount > 0')
-				.orderBy('flash.likedCount', 'DESC');
-
-			const flashs = await query.limit(10).getMany();
-
-			return await this.flashEntityService.packMany(flashs, me);
+			const result = await this.flashService.featured({
+				offset: ps.offset,
+				limit: ps.limit,
+			});
+			return await this.flashEntityService.packMany(result, me);
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/i/update.ts b/packages/backend/src/server/api/endpoints/i/update.ts
index c22cbe5d4b..bb0f5aa11a 100644
--- a/packages/backend/src/server/api/endpoints/i/update.ts
+++ b/packages/backend/src/server/api/endpoints/i/update.ts
@@ -11,7 +11,7 @@ import { JSDOM } from 'jsdom';
 import { extractCustomEmojisFromMfm } from '@/misc/extract-custom-emojis-from-mfm.js';
 import { extractHashtags } from '@/misc/extract-hashtags.js';
 import * as Acct from '@/misc/acct.js';
-import type { UsersRepository, DriveFilesRepository, UserProfilesRepository, PagesRepository } from '@/models/_.js';
+import type { UsersRepository, DriveFilesRepository, MiMeta, UserProfilesRepository, PagesRepository } from '@/models/_.js';
 import type { MiLocalUser, MiUser } from '@/models/User.js';
 import { birthdaySchema, listenbrainzSchema, descriptionSchema, followedMessageSchema, locationSchema, nameSchema } from '@/models/User.js';
 import type { MiUserProfile } from '@/models/UserProfile.js';
@@ -22,6 +22,7 @@ import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { UserFollowingService } from '@/core/UserFollowingService.js';
 import { AccountUpdateService } from '@/core/AccountUpdateService.js';
+import { UtilityService } from '@/core/UtilityService.js';
 import { HashtagService } from '@/core/HashtagService.js';
 import { DI } from '@/di-symbols.js';
 import { RolePolicies, RoleService } from '@/core/RoleService.js';
@@ -126,6 +127,13 @@ export const meta = {
 			code: 'RESTRICTED_BY_ROLE',
 			id: '8feff0ba-5ab5-585b-31f4-4df816663fad',
 		},
+
+		nameContainsProhibitedWords: {
+			message: 'Your new name contains prohibited words.',
+			code: 'YOUR_NAME_CONTAINS_PROHIBITED_WORDS',
+			id: '0b3f9f6a-2f4d-4b1f-9fb4-49d3a2fd7191',
+			httpStatusCode: 422,
+		},
 	},
 
 	res: {
@@ -187,6 +195,9 @@ export const paramDef = {
 		noCrawle: { type: 'boolean' },
 		preventAiLearning: { type: 'boolean' },
 		noindex: { type: 'boolean' },
+		requireSigninToViewContents: { type: 'boolean' },
+		makeNotesFollowersOnlyBefore: { type: 'integer', nullable: true },
+		makeNotesHiddenBefore: { type: 'integer', nullable: true },
 		enableRss: { type: 'boolean' },
 		isBot: { type: 'boolean' },
 		isCat: { type: 'boolean' },
@@ -242,6 +253,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		@Inject(DI.config)
 		private config: Config,
 
+		@Inject(DI.meta)
+		private instanceMeta: MiMeta,
+
 		@Inject(DI.usersRepository)
 		private usersRepository: UsersRepository,
 
@@ -266,6 +280,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private cacheService: CacheService,
 		private httpRequestService: HttpRequestService,
 		private avatarDecorationService: AvatarDecorationService,
+		private utilityService: UtilityService,
 	) {
 		super(meta, paramDef, async (ps, _user, token) => {
 			const user = await this.usersRepository.findOneByOrFail({ id: _user.id }) as MiLocalUser;
@@ -343,6 +358,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			if (typeof ps.carefulBot === 'boolean') profileUpdates.carefulBot = ps.carefulBot;
 			if (typeof ps.autoAcceptFollowed === 'boolean') profileUpdates.autoAcceptFollowed = ps.autoAcceptFollowed;
 			if (typeof ps.noCrawle === 'boolean') profileUpdates.noCrawle = ps.noCrawle;
+			if (typeof ps.requireSigninToViewContents === 'boolean') updates.requireSigninToViewContents = ps.requireSigninToViewContents;
+			if ((typeof ps.makeNotesFollowersOnlyBefore === 'number') || (ps.makeNotesFollowersOnlyBefore === null)) updates.makeNotesFollowersOnlyBefore = ps.makeNotesFollowersOnlyBefore;
+			if ((typeof ps.makeNotesHiddenBefore === 'number') || (ps.makeNotesHiddenBefore === null)) updates.makeNotesHiddenBefore = ps.makeNotesHiddenBefore;
 			if (typeof ps.isCat === 'boolean') updates.isCat = ps.isCat;
 			if (typeof ps.speakAsCat === 'boolean') updates.speakAsCat = ps.speakAsCat;
 			if (typeof ps.injectFeaturedNote === 'boolean') profileUpdates.injectFeaturedNote = ps.injectFeaturedNote;
@@ -485,8 +503,17 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			const newName = updates.name === undefined ? user.name : updates.name;
 			const newDescription = profileUpdates.description === undefined ? profile.description : profileUpdates.description;
 			const newFields = profileUpdates.fields === undefined ? profile.fields : profileUpdates.fields;
+			const newFollowedMessage = profileUpdates.followedMessage === undefined ? profile.followedMessage : profileUpdates.followedMessage;
 
 			if (newName != null) {
+				let hasProhibitedWords = false;
+				if (!await this.roleService.isModerator(user)) {
+					hasProhibitedWords = this.utilityService.isKeyWordIncluded(newName, this.instanceMeta.prohibitedWordsForNameOfUser);
+				}
+				if (hasProhibitedWords) {
+					throw new ApiError(meta.errors.nameContainsProhibitedWords);
+				}
+
 				const tokens = mfm.parseSimple(newName);
 				emojis = emojis.concat(extractCustomEmojisFromMfm(tokens));
 			}
@@ -506,6 +533,11 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				]);
 			}
 
+			if (newFollowedMessage != null) {
+				const tokens = mfm.parse(newFollowedMessage);
+				emojis = emojis.concat(extractCustomEmojisFromMfm(tokens));
+			}
+
 			updates.emojis = emojis;
 			updates.tags = tags;
 
@@ -589,7 +621,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 	// these two methods need to be kept in sync with
 	// `ApRendererService.renderPerson`
 	private userNeedsPublishing(oldUser: MiLocalUser, newUser: Partial<MiUser>): boolean {
-		const basicFields: (keyof MiUser)[] = ['avatarId', 'bannerId', 'backgroundId', 'isBot', 'username', 'name', 'isLocked', 'isExplorable', 'isCat', 'noindex', 'speakAsCat', 'movedToUri', 'alsoKnownAs', 'hideOnlineStatus', 'enableRss'];
+		const basicFields: (keyof MiUser)[] = ['avatarId', 'bannerId', 'backgroundId', 'isBot', 'username', 'name', 'isLocked', 'isExplorable', 'isCat', 'noindex', 'speakAsCat', 'movedToUri', 'alsoKnownAs', 'hideOnlineStatus', 'enableRss', 'requireSigninToViewContents', 'makeNotesFollowersOnlyBefore', 'makeNotesHiddenBefore'];
 		for (const field of basicFields) {
 			if ((field in newUser) && oldUser[field] !== newUser[field]) {
 				return true;
diff --git a/packages/backend/src/server/api/endpoints/notes/show.ts b/packages/backend/src/server/api/endpoints/notes/show.ts
index 49c51cb33c..f0c9db38b4 100644
--- a/packages/backend/src/server/api/endpoints/notes/show.ts
+++ b/packages/backend/src/server/api/endpoints/notes/show.ts
@@ -28,6 +28,12 @@ export const meta = {
 			code: 'NO_SUCH_NOTE',
 			id: '24fcbfc6-2e37-42b6-8388-c29b3861a08d',
 		},
+
+		signinRequired: {
+			message: 'Signin required.',
+			code: 'SIGNIN_REQUIRED',
+			id: '8e75455b-738c-471d-9f80-62693f33372e',
+		},
 	},
 
 	// 2 calls per second
@@ -56,7 +62,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const query = await this.notesRepository.createQueryBuilder('note')
-				.where('note.id = :noteId', { noteId: ps.noteId });
+				.where('note.id = :noteId', { noteId: ps.noteId })
+				.innerJoinAndSelect('note.user', 'user');
 
 			this.queryService.generateVisibilityQuery(query, me);
 			if (me) {
@@ -69,6 +76,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.noSuchNote);
 			}
 
+			if (note.user!.requireSigninToViewContents && me == null) {
+				throw new ApiError(meta.errors.signinRequired);
+			}
+
 			return await this.noteEntityService.pack(note, me, {
 				detail: true,
 			});
diff --git a/packages/backend/src/server/api/endpoints/notes/versions.ts b/packages/backend/src/server/api/endpoints/notes/versions.ts
index 343417f0e2..9b98d19fb1 100644
--- a/packages/backend/src/server/api/endpoints/notes/versions.ts
+++ b/packages/backend/src/server/api/endpoints/notes/versions.ts
@@ -27,6 +27,12 @@ export const meta = {
 			code: 'NO_SUCH_NOTE',
 			id: '24fcbfc6-2e37-42b6-8388-c29b3861a08d',
 		},
+
+		signinRequired: {
+			message: 'Signin required.',
+			code: 'SIGNIN_REQUIRED',
+			id: '8e75455b-738c-471d-9f80-62693f33372e',
+		},
 	},
 
 	// 10 calls per 5 seconds
@@ -55,10 +61,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const query = await this.notesRepository.createQueryBuilder('note')
-				.select('note.id')
-				.where('note.id = :noteId', { noteId: ps.noteId });
+				.where('note.id = :noteId', { noteId: ps.noteId })
+				.innerJoinAndSelect('note.user', 'user');
 
 			this.queryService.generateVisibilityQuery(query, me);
+			if (me) {
+				this.queryService.generateBlockedUserQuery(query, me);
+			}
 
 			const note = await query.getOne();
 
@@ -66,6 +75,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				throw new ApiError(meta.errors.noSuchNote);
 			}
 
+			if (note.user!.requireSigninToViewContents && me == null) {
+				throw new ApiError(meta.errors.signinRequired);
+			}
+
 			const edits = await this.getterService.getEdits(ps.noteId).catch(err => {
 				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
 				throw err;
diff --git a/packages/backend/src/server/api/endpoints/users/notes.ts b/packages/backend/src/server/api/endpoints/users/notes.ts
index 92d8032fa6..6416e43ff1 100644
--- a/packages/backend/src/server/api/endpoints/users/notes.ts
+++ b/packages/backend/src/server/api/endpoints/users/notes.ts
@@ -43,6 +43,12 @@ export const meta = {
 			code: 'BOTH_WITH_REPLIES_AND_WITH_FILES',
 			id: '91c8cb9f-36ed-46e7-9ca2-7df96ed6e222',
 		},
+
+		signinRequired: {
+			message: 'Signin required.',
+			code: 'SIGNIN_REQUIRED',
+			id: 'd1588a9e-4b4d-4c07-807f-16f1486577a2',
+		},
 	},
 
 	// 5 calls per second