users system prototyping

src/rt/rfwfs/index.ts

@@ -5,15 +5,15 @@ function wrap_bsearch<T extends Entry>(index: number, result: T): WrapResult<T,
 	return wrap(result, index)
 }
 
-export default function directory_search<T extends Entry>(entry_collection: T[], file_name: string): WrapResult<T, number> | undefined {
+export default function directory_search<T extends Entry>(dir_files: T[], file_name: string): WrapResult<T, number> | undefined {
 	let start = 0
-	let end = entry_collection.length-1
+	let end = dir_files.length-1
 	while (start<=end) {
 		const median = (start+end)>>1
-		const median_name = entry_collection[median].name.inner
+		const median_name = dir_files[median].name.inner
 
 		if (median_name === file_name) {
-			return wrap_bsearch(median, entry_collection[median])
+			return wrap_bsearch(median, dir_files[median])
 		} else if (median_name<file_name) {
 			start = median+1
 		} else {

src/rt/rfwfs/main.ts

@@ -12,7 +12,6 @@ const enum Permissions {
 	r = 1<<0,
 	w = 1<<1,
 	x = 1<<2,
-	none = 1<<3,
 }
 const enum ROOT_ID {
 	TRUNK = "/",

src/rt/rfwfs/users.ts

@@ -1,6 +1,6 @@
 import { ROOT_ID } from "./main";
 
-import Crypto, { SHA256_String } from "../crypto/generate";
+import Crypto, { type SHA256_String } from "../crypto/generate";
 import wrap, { type WrapResult } from "./wrap";
 
 const enum SysGroups {
@@ -12,85 +12,177 @@ const enum GroupSearch {
 	WheelResult,
 	UsersResult,
 }
+const enum UserMoveStatus {
+	Ok,
+	RootBlocked,
+	MovingNonExistentUser,
+	AlreadyInWheel,
+	AlreadyInUsers,
+}
+const enum SettingUser {
+	Ok,
+	AlreadyLoggedIn,
+	UserDoesNotExist
+}
 
-type WrapUserSearch = WrapResult<User | undefined, GroupSearch>
+type Group = User[]
+type User_Index = [User, number]
+type WrapUserSearch = WrapResult<User_Index | undefined, GroupSearch>
 
-const wheel: User[] = []
-const users: User[] = []
+type WheelAndUsers = Group
+interface Groups {
+	wheel: Group,
+	users: Group,
+	together: () => WheelAndUsers
+}
 
-function wrap_user_search(status: GroupSearch, result?: User): WrapUserSearch {
+const groups: Groups = {
+	wheel: [],
+	users: [],
+	together: function() {
+		return [...this.wheel, ...this.users]
+	}
+}
+
+function wrap_user_search(status: GroupSearch, result?: User_Index): WrapUserSearch {
 	return wrap(result, status)
 }
 
-function groups_find_user(user_name: string): WrapUserSearch {
-	const exist_in_wheel = wheel.find(user => user.get_uname() === user_name)
+function group_iter_for_user(uname: string, group_t: Group): User_Index | undefined {
+	for (let i = 0; i<group_t.length; i++) {
+		if (group_t[i].get_uname() === uname) {
+			return [group_t[i], i]
+		}
+	}
+	return undefined
+}
+
+function groups_find_user(uname: string): WrapUserSearch {
+	const exist_in_wheel = group_iter_for_user(uname, groups.wheel)
 	if (exist_in_wheel) {
 		return wrap_user_search(GroupSearch.WheelResult, exist_in_wheel)
 	}
-	const exist_in_users = users.find(user => user.get_uname() === user_name)
+	const exist_in_users = group_iter_for_user(uname, groups.users)
 	if (exist_in_users) {
 		return wrap_user_search(GroupSearch.UsersResult, exist_in_users)
 	}
 	return wrap_user_search(GroupSearch.NotFound)
 }
 
-function group_add(new_user: User, group: User[]): GroupSearch {
+function group_add(new_user: User, group_t: Group): GroupSearch {
 	const dups = groups_find_user(new_user.get_uname())
 	if (dups.status === GroupSearch.NotFound) {
-		group.push(new_user)
+		group_t.push(new_user)
 	}
 	return dups.status
 }
 
-function group_remove(user_name: string, group: User[]): boolean {
-	for (let i = 0; i<group.length; i++) {
-		if (group[i].get_uname() === user_name) {
-			group.splice(i, 1)
+function group_remove(uname: string, group_t: Group): boolean {
+	if (uname !== ROOT_ID.NAME) {
+		const find_user = group_iter_for_user(uname, group_t)
+		if (find_user) {
+			group_t.splice(find_user[1], 1)
 			return true
 		}
 	}
 	return false
 }
 
-function group_wheel_add(new_user: User): GroupSearch {
-	return group_add(new_user, wheel)
+function group_user_move(uname: string, new_group: SysGroups): UserMoveStatus {
+	if (uname === ROOT_ID.NAME) { return UserMoveStatus.RootBlocked }
+
+	const find_in_group = groups_find_user(uname)
+	if (find_in_group.status === GroupSearch.NotFound) { return UserMoveStatus.MovingNonExistentUser }
+
+	if (new_group === SysGroups.Wheel) {
+		if (find_in_group.status === GroupSearch.WheelResult) { return UserMoveStatus.AlreadyInWheel }
+
+		groups.wheel.push(groups.users.splice((find_in_group.result as User_Index)[1], 1)[0])
+	} else if (new_group === SysGroups.Users) {
+		if (find_in_group.status === GroupSearch.UsersResult) { return UserMoveStatus.AlreadyInUsers }
+
+		groups.users.push(groups.wheel.splice((find_in_group.result as User_Index)[1], 1)[0])
+	}
+	return UserMoveStatus.Ok
 }
 
-function group_wheel_remove(user_name: string): boolean {
-	return group_remove(user_name, wheel)
+function group_wheel_add(new_user: User): GroupSearch {
+	return group_add(new_user, groups.wheel)
+}
+
+function group_wheel_remove(uname: string): boolean {
+	return group_remove(uname, groups.wheel)
 }
 
 function group_users_add(new_user: User): GroupSearch {
-	return group_add(new_user, users)
+	return group_add(new_user, groups.users)
 }
 
-function group_users_remove(user_name: string): boolean {
-	return group_remove(user_name, users)
+function group_users_remove(uname: string): boolean {
+	return group_remove(uname, groups.users)
 }
 
 class user_lib {
-	public static current: string = ROOT_ID.NAME
+	public static current_sys_user: User;
+
+	public static get_sys_user(): User {
+		return groups.together().find(user => user.is_logged_in()) as User
+	}
+
+	public static set_sys_user(uname: string): SettingUser {
+		const found_user    = groups_find_user(uname)
+		const result_user_i = found_user.result
+		if (!result_user_i)                  { return SettingUser.UserDoesNotExist }
+		if (result_user_i[0].is_logged_in()) { return SettingUser.AlreadyLoggedIn }
+
+		user_lib.current_sys_user = result_user_i[0]
+		return SettingUser.Ok
+	}
 }
 
 class User extends user_lib {
+	private current: boolean;
 	private name: string;
 	private password?: SHA256_String;
 
 	constructor(name: string, password?: SHA256_String) {
 		super()
 		this.name = name
+		this.current = name === ROOT_ID.NAME
 		this.password = password
 	}
 
+	public is_logged_in(): boolean {
+		return this.current
+	}
+
+	public login(password?: SHA256_String): boolean {
+		if (password !== this.password) { return false }
+
+		for (const other_user of groups.together()) {
+			if (other_user.is_logged_in()) {
+				other_user.current = false
+				this.current = true
+				break
+			}
+		}
+		return this.current
+	}
+
 	public get_uname() {
 		return this.name
 	}
 
-	public set_uname(new_username: string) {
-		const search = groups_find_user(new_username)
+	public set_uname(new_uname: string): GroupSearch {
+		const search = groups_find_user(new_uname)
 		if (search.status === GroupSearch.NotFound) {
-
+			this.name = new_uname
 		}
+		return search.status
+	}
+
+	public get_password(): SHA256_String | undefined {
+		return this.password
 	}
 
 	public async set_password(new_password?: string): Promise<void> {
@@ -102,11 +194,17 @@ class User extends user_lib {
 	}
 }
 
+groups.wheel.push(
+	new User(ROOT_ID.NAME),
+	new User("rhpidfyre", "9025f0dd51ed4f2b2dc2791b6a15eff804555c283bac50d1d8923c18a51f977b")
+)
+
 export default User
 export {
 	group_wheel_remove,
 	group_users_remove,
 	group_wheel_add,
 	group_users_add,
+	group_user_move,
 	SysGroups,
 }