refactor: use ajv instead of cafy (#8324)

* wip

* wip

* Update abuse-user-reports.ts

* Update files.ts

* Update list-remote.ts

* Update list.ts

* Update show-users.ts

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Update update.ts

* Update search.ts

* Update reactions.ts

* Update search.ts

* wip

* wip

* wip

* wip

* Update update.ts

* Update relation.ts

* Update available.ts

* wip

* wip

* wip

* Update packages/backend/src/server/api/define.ts

Co-authored-by: Johann150 <johann.galle@protonmail.com>

* Update define.ts

* Update define.ts

* typo

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Update update.ts

* wip

* Update signup.ts

* Update call.ts

* minimum for limit

* type

* remove needless annotation

* wip

* Update signup.ts

* wip

* wip

* fix

* Update create.ts

Co-authored-by: Johann150 <johann.galle@protonmail.com>

17 files changed, 191 insertions, 290 deletions

diff --git a/packages/backend/src/server/api/endpoints/drive/files.ts b/packages/backend/src/server/api/endpoints/drive/files.ts
index a5c0a626a1..8ca9daed4d 100644
--- a/packages/backend/src/server/api/endpoints/drive/files.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../define';
 import { DriveFiles } from '@/models/index';
 import { makePaginationQuery } from '../../common/make-pagination-query';
@@ -11,30 +9,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-
-		folderId: {
-			validator: $.optional.nullable.type(ID),
-			default: null,
-		},
-
-		type: {
-			validator: $.optional.nullable.str.match(/^[a-zA-Z\/\-*]+$/),
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -46,8 +20,20 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+		folderId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
+		type: { type: 'string', nullable: true, pattern: /^[a-zA-Z\/\-*]+$/.toString().slice(1, -1) },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const query = makePaginationQuery(DriveFiles.createQueryBuilder('file'), ps.sinceId, ps.untilId)
 		.andWhere('file.userId = :userId', { userId: user.id });
 
@@ -65,7 +51,7 @@ export default define(meta, async (ps, user) => {
 		}
 	}
 
-	const files = await query.take(ps.limit!).getMany();
+	const files = await query.take(ps.limit).getMany();
 
 	return await DriveFiles.packMany(files, { detail: false, self: true });
 });
diff --git a/packages/backend/src/server/api/endpoints/drive/files/attached-notes.ts b/packages/backend/src/server/api/endpoints/drive/files/attached-notes.ts
index 835dde8058..20238c1b96 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/attached-notes.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/attached-notes.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../../define';
 import { ApiError } from '../../../error';
 import { DriveFiles, Notes } from '@/models/index';
@@ -11,12 +9,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		fileId: {
-			validator: $.type(ID),
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -36,8 +28,16 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		fileId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['fileId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	// Fetch file
 	const file = await DriveFiles.findOne({
 		id: ps.fileId,
diff --git a/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts b/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts
index a45d357ee8..8b7af3e54a 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/check-existence.ts
@@ -1,4 +1,3 @@
-import $ from 'cafy';
 import define from '../../../define';
 import { DriveFiles } from '@/models/index';
 
@@ -9,20 +8,22 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		md5: {
-			validator: $.str,
-		},
-	},
-
 	res: {
 		type: 'boolean',
 		optional: false, nullable: false,
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		md5: { type: 'string' },
+	},
+	required: ['md5'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const file = await DriveFiles.findOne({
 		md5: ps.md5,
 		userId: user.id,
diff --git a/packages/backend/src/server/api/endpoints/drive/files/create.ts b/packages/backend/src/server/api/endpoints/drive/files/create.ts
index ac7863ec7e..f5791f6ec7 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/create.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/create.ts
@@ -1,6 +1,4 @@
 import ms from 'ms';
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import { addFile } from '@/services/drive/add-file';
 import define from '../../../define';
 import { apiLogger } from '../../../logger';
@@ -22,33 +20,6 @@ export const meta = {
 
 	kind: 'write:drive',
 
-	params: {
-		folderId: {
-			validator: $.optional.nullable.type(ID),
-			default: null,
-		},
-
-		name: {
-			validator: $.optional.nullable.str,
-			default: null,
-		},
-
-		comment: {
-			validator: $.optional.nullable.str.max(DB_MAX_IMAGE_COMMENT_LENGTH),
-			default: null,
-		},
-
-		isSensitive: {
-			validator: $.optional.bool,
-			default: false,
-		},
-
-		force: {
-			validator: $.optional.bool,
-			default: false,
-		},
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -64,8 +35,20 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		folderId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
+		name: { type: 'string', nullable: true, default: null },
+		comment: { type: 'string', nullable: true, maxLength: DB_MAX_IMAGE_COMMENT_LENGTH, default: null },
+		isSensitive: { type: 'boolean', default: false },
+		force: { type: 'boolean', default: false },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user, _, file, cleanup) => {
+export default define(meta, paramDef, async (ps, user, _, file, cleanup) => {
 	// Get 'name' parameter
 	let name = ps.name || file.originalname;
 	if (name !== undefined && name !== null) {
diff --git a/packages/backend/src/server/api/endpoints/drive/files/delete.ts b/packages/backend/src/server/api/endpoints/drive/files/delete.ts
index 308beb58a4..664637a68f 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/delete.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/delete.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import { deleteFile } from '@/services/drive/delete-file';
 import { publishDriveStream } from '@/services/stream';
 import define from '../../../define';
@@ -13,12 +11,6 @@ export const meta = {
 
 	kind: 'write:drive',
 
-	params: {
-		fileId: {
-			validator: $.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchFile: {
 			message: 'No such file.',
@@ -34,8 +26,16 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		fileId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['fileId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const file = await DriveFiles.findOne(ps.fileId);
 
 	if (file == null) {
diff --git a/packages/backend/src/server/api/endpoints/drive/files/find-by-hash.ts b/packages/backend/src/server/api/endpoints/drive/files/find-by-hash.ts
index dc74dcb7e6..98de790c0d 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/find-by-hash.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/find-by-hash.ts
@@ -1,4 +1,3 @@
-import $ from 'cafy';
 import define from '../../../define';
 import { DriveFiles } from '@/models/index';
 
@@ -9,12 +8,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		md5: {
-			validator: $.str,
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -26,8 +19,16 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		md5: { type: 'string' },
+	},
+	required: ['md5'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const files = await DriveFiles.find({
 		md5: ps.md5,
 		userId: user.id,
diff --git a/packages/backend/src/server/api/endpoints/drive/files/find.ts b/packages/backend/src/server/api/endpoints/drive/files/find.ts
index 2244df13cd..8d30c29da6 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/find.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/find.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../../define';
 import { DriveFiles } from '@/models/index';
 
@@ -10,17 +8,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		name: {
-			validator: $.str,
-		},
-
-		folderId: {
-			validator: $.optional.nullable.type(ID),
-			default: null,
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -32,8 +19,17 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		name: { type: 'string' },
+		folderId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
+	},
+	required: ['name'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const files = await DriveFiles.find({
 		name: ps.name,
 		userId: user.id,
diff --git a/packages/backend/src/server/api/endpoints/drive/files/show.ts b/packages/backend/src/server/api/endpoints/drive/files/show.ts
index 18b17c4653..8edb8785bc 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/show.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/show.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../../define';
 import { ApiError } from '../../../error';
 import { DriveFile } from '@/models/entities/drive-file';
@@ -12,16 +10,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		fileId: {
-			validator: $.optional.type(ID),
-		},
-
-		url: {
-			validator: $.optional.str,
-		},
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -49,8 +37,17 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		fileId: { type: 'string', format: 'misskey:id' },
+		url: { type: 'string' },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	let file: DriveFile | undefined;
 
 	if (ps.fileId) {
diff --git a/packages/backend/src/server/api/endpoints/drive/files/update.ts b/packages/backend/src/server/api/endpoints/drive/files/update.ts
index b7ca80e83c..d77deea7db 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/update.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/update.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import { publishDriveStream } from '@/services/stream';
 import define from '../../../define';
 import { ApiError } from '../../../error';
@@ -13,33 +11,13 @@ export const meta = {
 
 	kind: 'write:drive',
 
-	params: {
-		fileId: {
-			validator: $.type(ID),
-		},
-
-		folderId: {
-			validator: $.optional.nullable.type(ID),
-			default: undefined as any,
-		},
-
-		name: {
-			validator: $.optional.str.pipe(DriveFiles.validateFileName),
-			default: undefined as any,
-		},
-
-		isSensitive: {
-			validator: $.optional.bool,
-			default: undefined as any,
-		},
-
-		comment: {
-			validator: $.optional.nullable.str.max(DB_MAX_IMAGE_COMMENT_LENGTH),
-			default: undefined as any,
+	errors: {
+		invalidFileName: {
+			message: 'Invalid file name.',
+			code: 'INVALID_FILE_NAME',
+			id: '395e7156-f9f0-475e-af89-53c3c23080c2',
 		},
-	},
 
-	errors: {
 		noSuchFile: {
 			message: 'No such file.',
 			code: 'NO_SUCH_FILE',
@@ -66,8 +44,20 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		fileId: { type: 'string', format: 'misskey:id' },
+		folderId: { type: 'string', format: 'misskey:id', nullable: true },
+		name: { type: 'string' },
+		isSensitive: { type: 'boolean' },
+		comment: { type: 'string', nullable: true, maxLength: 512 },
+	},
+	required: ['fileId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const file = await DriveFiles.findOne(ps.fileId);
 
 	if (file == null) {
@@ -79,6 +69,9 @@ export default define(meta, async (ps, user) => {
 	}
 
 	if (ps.name) file.name = ps.name;
+	if (!DriveFiles.validateFileName(file.name)) {
+		throw new ApiError(meta.errors.invalidFileName);
+	}
 
 	if (ps.comment !== undefined) file.comment = ps.comment;
 
diff --git a/packages/backend/src/server/api/endpoints/drive/files/upload-from-url.ts b/packages/backend/src/server/api/endpoints/drive/files/upload-from-url.ts
index 40da1a4fb4..a4619ebf36 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/upload-from-url.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/upload-from-url.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import ms from 'ms';
 import { uploadFromUrl } from '@/services/drive/upload-from-url';
 import define from '../../../define';
@@ -18,42 +16,23 @@ export const meta = {
 	requireCredential: true,
 
 	kind: 'write:drive',
+} as const;
 
-	params: {
-		url: {
-			// TODO: Validate this url
-			validator: $.str,
-		},
-
-		folderId: {
-			validator: $.optional.nullable.type(ID),
-			default: null,
-		},
-
-		isSensitive: {
-			validator: $.optional.bool,
-			default: false,
-		},
-
-		comment: {
-			validator: $.optional.nullable.str.max(DB_MAX_IMAGE_COMMENT_LENGTH),
-			default: null,
-		},
-
-		marker: {
-			validator: $.optional.nullable.str,
-			default: null,
-		},
-
-		force: {
-			validator: $.optional.bool,
-			default: false,
-		},
+const paramDef = {
+	type: 'object',
+	properties: {
+		url: { type: 'string' },
+		folderId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
+		isSensitive: { type: 'boolean', default: false },
+		comment: { type: 'string', nullable: true, maxLength: 512, default: null },
+		marker: { type: 'string', nullable: true, default: null },
+		force: { type: 'boolean', default: false },
 	},
+	required: ['url'],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	uploadFromUrl({ url: ps.url, user, folderId: ps.folderId, sensitive: ps.isSensitive, force: ps.force, comment: ps.comment }).then(file => {
 		DriveFiles.pack(file, { self: true }).then(packedFile => {
 			publishMainStream(user.id, 'urlUploadFinished', {
diff --git a/packages/backend/src/server/api/endpoints/drive/folders.ts b/packages/backend/src/server/api/endpoints/drive/folders.ts
index 8f8d1d2c0a..a543ae27df 100644
--- a/packages/backend/src/server/api/endpoints/drive/folders.ts
+++ b/packages/backend/src/server/api/endpoints/drive/folders.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../define';
 import { DriveFolders } from '@/models/index';
 import { makePaginationQuery } from '../../common/make-pagination-query';
@@ -11,26 +9,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-
-		folderId: {
-			validator: $.optional.nullable.type(ID),
-			default: null,
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -42,8 +20,19 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+		folderId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const query = makePaginationQuery(DriveFolders.createQueryBuilder('folder'), ps.sinceId, ps.untilId)
 		.andWhere('folder.userId = :userId', { userId: user.id });
 
@@ -53,7 +42,7 @@ export default define(meta, async (ps, user) => {
 		query.andWhere('folder.parentId IS NULL');
 	}
 
-	const folders = await query.take(ps.limit!).getMany();
+	const folders = await query.take(ps.limit).getMany();
 
 	return await Promise.all(folders.map(folder => DriveFolders.pack(folder)));
 });
diff --git a/packages/backend/src/server/api/endpoints/drive/folders/create.ts b/packages/backend/src/server/api/endpoints/drive/folders/create.ts
index 38ed17e0e5..ab48d5599e 100644
--- a/packages/backend/src/server/api/endpoints/drive/folders/create.ts
+++ b/packages/backend/src/server/api/endpoints/drive/folders/create.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import { publishDriveStream } from '@/services/stream';
 import define from '../../../define';
 import { ApiError } from '../../../error';
@@ -13,17 +11,6 @@ export const meta = {
 
 	kind: 'write:drive',
 
-	params: {
-		name: {
-			validator: $.optional.str.pipe(DriveFolders.validateFolderName),
-			default: 'Untitled',
-		},
-
-		parentId: {
-			validator: $.optional.nullable.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchFolder: {
 			message: 'No such folder.',
@@ -39,8 +26,17 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		name: { type: 'string', default: "Untitled", maxLength: 200 },
+		parentId: { type: 'string', format: 'misskey:id', nullable: true },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	// If the parent folder is specified
 	let parent = null;
 	if (ps.parentId) {
diff --git a/packages/backend/src/server/api/endpoints/drive/folders/delete.ts b/packages/backend/src/server/api/endpoints/drive/folders/delete.ts
index 13716fccea..51c0340529 100644
--- a/packages/backend/src/server/api/endpoints/drive/folders/delete.ts
+++ b/packages/backend/src/server/api/endpoints/drive/folders/delete.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../../define';
 import { publishDriveStream } from '@/services/stream';
 import { ApiError } from '../../../error';
@@ -12,12 +10,6 @@ export const meta = {
 
 	kind: 'write:drive',
 
-	params: {
-		folderId: {
-			validator: $.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchFolder: {
 			message: 'No such folder.',
@@ -33,8 +25,16 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		folderId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['folderId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	// Get folder
 	const folder = await DriveFolders.findOne({
 		id: ps.folderId,
diff --git a/packages/backend/src/server/api/endpoints/drive/folders/find.ts b/packages/backend/src/server/api/endpoints/drive/folders/find.ts
index 911f51d78b..057f40b1cc 100644
--- a/packages/backend/src/server/api/endpoints/drive/folders/find.ts
+++ b/packages/backend/src/server/api/endpoints/drive/folders/find.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../../define';
 import { DriveFolders } from '@/models/index';
 
@@ -10,17 +8,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		name: {
-			validator: $.str,
-		},
-
-		parentId: {
-			validator: $.optional.nullable.type(ID),
-			default: null,
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -32,8 +19,17 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		name: { type: 'string' },
+		parentId: { type: 'string', format: 'misskey:id', nullable: true, default: null },
+	},
+	required: ['name'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const folders = await DriveFolders.find({
 		name: ps.name,
 		userId: user.id,
diff --git a/packages/backend/src/server/api/endpoints/drive/folders/show.ts b/packages/backend/src/server/api/endpoints/drive/folders/show.ts
index 58a6dd3c06..d31d7a4276 100644
--- a/packages/backend/src/server/api/endpoints/drive/folders/show.ts
+++ b/packages/backend/src/server/api/endpoints/drive/folders/show.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../../define';
 import { ApiError } from '../../../error';
 import { DriveFolders } from '@/models/index';
@@ -11,12 +9,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		folderId: {
-			validator: $.type(ID),
-		},
-	},
-
 	res: {
 		type: 'object',
 		optional: false, nullable: false,
@@ -32,8 +24,16 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		folderId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['folderId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	// Get folder
 	const folder = await DriveFolders.findOne({
 		id: ps.folderId,
diff --git a/packages/backend/src/server/api/endpoints/drive/folders/update.ts b/packages/backend/src/server/api/endpoints/drive/folders/update.ts
index 5b0cccd1c6..c70b5a0d54 100644
--- a/packages/backend/src/server/api/endpoints/drive/folders/update.ts
+++ b/packages/backend/src/server/api/endpoints/drive/folders/update.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import { publishDriveStream } from '@/services/stream';
 import define from '../../../define';
 import { ApiError } from '../../../error';
@@ -12,20 +10,6 @@ export const meta = {
 
 	kind: 'write:drive',
 
-	params: {
-		folderId: {
-			validator: $.type(ID),
-		},
-
-		name: {
-			validator: $.optional.str.pipe(DriveFolders.validateFolderName),
-		},
-
-		parentId: {
-			validator: $.optional.nullable.type(ID),
-		},
-	},
-
 	errors: {
 		noSuchFolder: {
 			message: 'No such folder.',
@@ -53,8 +37,18 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		folderId: { type: 'string', format: 'misskey:id' },
+		name: { type: 'string', maxLength: 200 },
+		parentId: { type: 'string', format: 'misskey:id', nullable: true },
+	},
+	required: ['folderId'],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	// Fetch folder
 	const folder = await DriveFolders.findOne({
 		id: ps.folderId,
diff --git a/packages/backend/src/server/api/endpoints/drive/stream.ts b/packages/backend/src/server/api/endpoints/drive/stream.ts
index 9ba7804946..921ae4c221 100644
--- a/packages/backend/src/server/api/endpoints/drive/stream.ts
+++ b/packages/backend/src/server/api/endpoints/drive/stream.ts
@@ -1,5 +1,3 @@
-import $ from 'cafy';
-import { ID } from '@/misc/cafy-id';
 import define from '../../define';
 import { DriveFiles } from '@/models/index';
 import { makePaginationQuery } from '../../common/make-pagination-query';
@@ -11,25 +9,6 @@ export const meta = {
 
 	kind: 'read:drive',
 
-	params: {
-		limit: {
-			validator: $.optional.num.range(1, 100),
-			default: 10,
-		},
-
-		sinceId: {
-			validator: $.optional.type(ID),
-		},
-
-		untilId: {
-			validator: $.optional.type(ID),
-		},
-
-		type: {
-			validator: $.optional.str.match(/^[a-zA-Z\/\-*]+$/),
-		},
-	},
-
 	res: {
 		type: 'array',
 		optional: false, nullable: false,
@@ -41,8 +20,19 @@ export const meta = {
 	},
 } as const;
 
+const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+		type: { type: 'string', pattern: /^[a-zA-Z\/\-*]+$/.toString().slice(1, -1) },
+	},
+	required: [],
+} as const;
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, async (ps, user) => {
+export default define(meta, paramDef, async (ps, user) => {
 	const query = makePaginationQuery(DriveFiles.createQueryBuilder('file'), ps.sinceId, ps.untilId)
 		.andWhere('file.userId = :userId', { userId: user.id });
 
@@ -54,7 +44,7 @@ export default define(meta, async (ps, user) => {
 		}
 	}
 
-	const files = await query.take(ps.limit!).getMany();
+	const files = await query.take(ps.limit).getMany();
 
 	return await DriveFiles.packMany(files, { detail: false, self: true });
 });