121 lines
3.2 KiB
TypeScript
121 lines
3.2 KiB
TypeScript
import { JSONKVStore } from "../plugos/lib/kv_store.json_file.ts";
|
|
|
|
export type User = {
|
|
username: string;
|
|
passwordHash: string; // hashed password
|
|
salt: string;
|
|
groups: string[]; // special "admin"
|
|
};
|
|
|
|
async function createUser(
|
|
username: string,
|
|
password: string,
|
|
groups: string[],
|
|
salt = generateSalt(16),
|
|
): Promise<User> {
|
|
return {
|
|
username,
|
|
passwordHash: await hashSHA256(`${salt}${password}`),
|
|
salt,
|
|
groups,
|
|
};
|
|
}
|
|
|
|
const userPrefix = `u:`;
|
|
|
|
export class Authenticator {
|
|
constructor(private store: JSONKVStore) {
|
|
}
|
|
|
|
async register(
|
|
username: string,
|
|
password: string,
|
|
groups: string[],
|
|
salt?: string,
|
|
): Promise<void> {
|
|
await this.store.set(
|
|
`${userPrefix}${username}`,
|
|
await createUser(username, password, groups, salt),
|
|
);
|
|
}
|
|
|
|
async authenticateHashed(
|
|
username: string,
|
|
hashedPassword: string,
|
|
): Promise<boolean> {
|
|
const user = await this.store.get(`${userPrefix}${username}`) as User;
|
|
if (!user) {
|
|
return false;
|
|
}
|
|
return user.passwordHash === hashedPassword;
|
|
}
|
|
|
|
async authenticate(
|
|
username: string,
|
|
password: string,
|
|
): Promise<string | undefined> {
|
|
const user = await this.store.get(`${userPrefix}${username}`) as User;
|
|
if (!user) {
|
|
return undefined;
|
|
}
|
|
const hashedPassword = await hashSHA256(`${user.salt}${password}`);
|
|
return user.passwordHash === hashedPassword ? hashedPassword : undefined;
|
|
}
|
|
|
|
async getAllUsers(): Promise<User[]> {
|
|
return (await this.store.queryPrefix(userPrefix)).map((item) => item.value);
|
|
}
|
|
|
|
getUser(username: string): Promise<User | undefined> {
|
|
return this.store.get(`${userPrefix}${username}`);
|
|
}
|
|
|
|
async setPassword(username: string, password: string): Promise<void> {
|
|
const user = await this.getUser(username);
|
|
if (!user) {
|
|
throw new Error(`User does not exist`);
|
|
}
|
|
user.passwordHash = await hashSHA256(`${user.salt}${password}`);
|
|
await this.store.set(`${userPrefix}${username}`, user);
|
|
}
|
|
|
|
async deleteUser(username: string): Promise<void> {
|
|
const user = await this.getUser(username);
|
|
if (!user) {
|
|
throw new Error(`User does not exist`);
|
|
}
|
|
await this.store.del(`${userPrefix}${username}`);
|
|
}
|
|
|
|
async setGroups(username: string, groups: string[]): Promise<void> {
|
|
const user = await this.getUser(username);
|
|
if (!user) {
|
|
throw new Error(`User does not exist`);
|
|
}
|
|
user.groups = groups;
|
|
await this.store.set(`${userPrefix}${username}`, user);
|
|
}
|
|
}
|
|
|
|
async function hashSHA256(message: string): Promise<string> {
|
|
// Transform the string into an ArrayBuffer
|
|
const encoder = new TextEncoder();
|
|
const data = encoder.encode(message);
|
|
|
|
// Generate the hash
|
|
const hashBuffer = await window.crypto.subtle.digest("SHA-256", data);
|
|
|
|
// Transform the hash into a hex string
|
|
return Array.from(new Uint8Array(hashBuffer)).map((b) =>
|
|
b.toString(16).padStart(2, "0")
|
|
).join("");
|
|
}
|
|
|
|
function generateSalt(length: number): string {
|
|
const array = new Uint8Array(length / 2); // because two characters represent one byte in hex
|
|
crypto.getRandomValues(array);
|
|
return Array.from(array, (byte) => ("00" + byte.toString(16)).slice(-2)).join(
|
|
"",
|
|
);
|
|
}
|