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(feat): better connection management, utility functions & tests

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This commit is contained in:
Alois 2026-04-14 01:37:18 +02:00
commit 822dfea577
14 changed files with 448 additions and 39 deletions
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19
README.md
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@ -1,8 +1,8 @@
# TypeScript TAuth SDK
TypeScript SDK for TAuth-based login and transport session bootstrap.
TypeScript SDK for TAuth-based login and explicit transport session management.
This SDK starts a local HTTP callback server, verifies a challenge, and opens an authenticated TTP transport client per `userId:sessionId`.
This SDK starts a local HTTP callback server, verifies a challenge, and gives you explicit control over TTP connections per `userId:sessionId`.
## Requirements
@ -43,6 +43,11 @@ const client = new TAuthClient({
identifier: "your-app-identifier",
privateKey: "<APP_PRIVATE_KEY_BASE64>",
publicKey: "<APP_PUBLIC_KEY_BASE64>",
saveSession: async (userId, sessionId) => {
// You must persist the session id yourself (for example in a database).
// Treat the session id like a password!
console.log("Save session", { userId, sessionId });
},
redirectUrl: "http://localhost:7878/callback",
appData: z.object({
my: z.string(),
@ -56,9 +61,15 @@ const client = new TAuthClient({
});
```
## Endpoints exposed by the SDK
## Auth endpoints exposed by the SDK
- `GET /auth`: Redirects user to TAuth frontend
- `GET /callback`: Handles challenge flow and session bootstrap
- `GET /callback`: Handles challenge flow and invokes your `saveSession(userId, sessionId)` callback
## Connection management
- Use `client.createTTP(userId, sessionId, omikronUrl)` when you want a persistent/manual TTP connection.
- Use `client.loadData(userId, sessionId)` for loading user specific application data.
- Use `client.saveData(userId, sessionId)` for saving user specific application data.
These endpoints need to be exposed behind some kind of http proxy to apply ssl

55
dist/index.d.ts vendored
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@ -1,6 +1,6 @@
import { type TransportClient, READY_STATE } from "@tensamin/ttp-core";
import { createSchema } from "./schema";
import type { ZodObject } from "zod";
import type { z, ZodObject } from "zod";
/**
* @param redirectUrl The URL should point to the TAuth HTTP Server at http://hostname:port/callback
*/
@ -9,6 +9,7 @@ export declare class TAuthClient {
identifier: string;
privateKey: string;
publicKey: string;
saveSession: (userId: number, sessionId: number) => Promise<void> | void;
redirectUrl: URL;
schema: ReturnType<typeof createSchema>;
httpServer: {
@ -17,31 +18,43 @@ export declare class TAuthClient {
};
clientMap: Map<string, TransportClient<{
identification: {
request: ZodObject<{
app_identifier: import("zod").ZodString;
app_session_id: import("zod").ZodNumber;
app_public_key: import("zod").ZodString;
user_id: import("zod").ZodNumber;
}, import("zod/v4/core").$strip>;
response: ZodObject<{
challenge: import("zod").ZodBase64;
public_key: import("zod").ZodBase64;
}, import("zod/v4/core").$strip>;
request: z.ZodObject<{
app_identifier: z.ZodString;
app_session_id: z.ZodNumber;
app_public_key: z.ZodString;
user_id: z.ZodNumber;
}, z.core.$strip>;
response: z.ZodObject<{
challenge: z.ZodBase64;
public_key: z.ZodBase64;
}, z.core.$strip>;
};
challenge_response: {
request: ZodObject<{
challenge: import("zod").ZodBase64;
}, import("zod/v4/core").$strip>;
response: ZodObject<{
app_data: ZodObject<import("zod/v4/core").$ZodLooseShape, import("zod/v4/core").$strip>;
}, import("zod/v4/core").$strip>;
request: z.ZodObject<{
challenge: z.ZodBase64;
}, z.core.$strip>;
response: z.ZodObject<{}, z.core.$strip>;
};
load_app_data: {
request: z.ZodObject<{}, z.core.$strip>;
response: z.ZodObject<{
app_data: z.ZodString;
}, z.core.$strip>;
};
save_app_data: {
request: z.ZodObject<{
app_data: z.ZodString;
}, z.core.$strip>;
response: z.ZodObject<{}, z.core.$strip>;
};
}>>;
constructor({ frontendUrl, identifier, privateKey, publicKey, redirectUrl, appData, httpServer, htmlSuccessPage, }: {
private appData;
constructor({ frontendUrl, identifier, privateKey, publicKey, saveSession, redirectUrl, appData, httpServer, htmlSuccessPage, }: {
frontendUrl: string;
identifier: string;
privateKey: string;
publicKey: string;
saveSession: (userId: number, sessionId: number) => Promise<void> | void;
redirectUrl: string;
appData: ZodObject;
httpServer?: {
@ -53,6 +66,9 @@ export declare class TAuthClient {
generateChallenge(userId: number): Promise<string>;
solveChallenge(userId: number, challenge: string): Promise<string>;
createTTP(userId: number, sessionId: number, omikronUrl: string): void;
loadData(userId: number, sessionId: number): Promise<Record<string, unknown>>;
saveData(userId: number, sessionId: number, data: any): Promise<void>;
private createTemporaryTTPConnection;
generateLink(challenge?: string): string;
}
export declare function getFriendlyReadyState(stateIndex: number): keyof typeof READY_STATE;
@ -60,3 +76,6 @@ export declare function generateKeyPair(): {
private: string;
public: string;
};
export * from "./crypto";
export * from "./schema";
export * from "./user";

57
dist/index.js vendored
View file

@ -13,17 +13,24 @@ export class TAuthClient {
identifier;
privateKey;
publicKey;
saveSession;
redirectUrl;
schema;
httpServer;
clientMap = new Map();
constructor({ frontendUrl, identifier, privateKey, publicKey, redirectUrl, appData, httpServer, htmlSuccessPage, }) {
appData;
constructor({ frontendUrl, identifier, privateKey, publicKey, saveSession, redirectUrl, appData, httpServer, htmlSuccessPage, }) {
this.frontendUrl = frontendUrl;
this.identifier = identifier;
this.privateKey = privateKey;
this.publicKey = publicKey;
if (typeof saveSession !== "function") {
throw new Error("[tauth] saveSession must be provided as a function");
}
this.saveSession = saveSession;
this.redirectUrl = new URL(redirectUrl);
this.schema = createSchema(appData);
this.appData = appData;
this.httpServer = httpServer ?? {
port: 7878,
hostname: "localhost",
@ -62,8 +69,7 @@ export class TAuthClient {
}
if ((await this.solveChallenge(userId, originalChallenge)) ===
potentialChallenge) {
const { ip_address } = await fetch("https://omega.tensamin.net/api/get/omikron/" + userId).then((res) => res.json());
this.createTTP(userId, potentialSessionId, ip_address);
await this.saveSession(userId, potentialSessionId);
return new Response(htmlSuccessPage || (await readFile("./index.html")), {
headers: {
"Content-Type": "text/html",
@ -133,6 +139,48 @@ export class TAuthClient {
}));
this.clientMap.get(`${userId}:${sessionId}`)?.connect();
}
async loadData(userId, sessionId) {
const connection = await this.createTemporaryTTPConnection(userId, sessionId);
const rawAppData = await connection.send("load_app_data", {});
const appData = JSON.parse(rawAppData.data.app_data);
const safeAppData = this.appData.safeParse(appData);
await connection.close();
if (!safeAppData.success) {
throw new Error(`Invalid app data: ${JSON.stringify(safeAppData.error.issues)}`);
}
return safeAppData.data;
}
async saveData(userId, sessionId, data) {
const connection = await this.createTemporaryTTPConnection(userId, sessionId);
const safeData = this.appData.safeParse(data);
if (!safeData.success) {
throw new Error(`Invalid app data: ${JSON.stringify(safeData.error.issues)}`);
}
await connection.send("save_app_data", {
app_data: JSON.stringify(safeData.data),
});
await connection.close();
}
async createTemporaryTTPConnection(userId, sessionId) {
const { ip_address } = await fetch("https://omega.tensamin.net/api/get/omikron/" + userId).then((res) => res.json());
let temporaryClient;
temporaryClient = createTransportClient(this.schema, {
url: ip_address,
onReadyStateChange: (stateIndex) => {
const state = getFriendlyReadyState(stateIndex);
if (state === "OPEN") {
temporaryClient?.send("identification", {
app_identifier: this.identifier,
app_session_id: sessionId,
app_public_key: this.publicKey,
user_id: userId,
});
}
},
});
temporaryClient.connect();
return temporaryClient;
}
generateLink(challenge) {
return new URL(`?identifier=${this.identifier}&redirect=${this.redirectUrl}${challenge ? `&challenge=${challenge}` : ""}`, this.frontendUrl).toString();
}
@ -159,3 +207,6 @@ export function generateKeyPair() {
public: toBase64(pub),
};
}
export * from "./crypto";
export * from "./schema";
export * from "./user";

12
dist/schema.d.ts vendored
View file

@ -16,8 +16,18 @@ export declare function createSchema(appData: ZodObject): {
request: z.ZodObject<{
challenge: z.ZodBase64;
}, z.core.$strip>;
response: z.ZodObject<{}, z.core.$strip>;
};
load_app_data: {
request: z.ZodObject<{}, z.core.$strip>;
response: z.ZodObject<{
app_data: z.ZodObject<z.core.$ZodLooseShape, z.core.$strip>;
app_data: z.ZodString;
}, z.core.$strip>;
};
save_app_data: {
request: z.ZodObject<{
app_data: z.ZodString;
}, z.core.$strip>;
response: z.ZodObject<{}, z.core.$strip>;
};
};

12
dist/schema.js vendored
View file

@ -17,9 +17,19 @@ export function createSchema(appData) {
request: z.object({
challenge: z.base64(),
}),
response: z.object({}),
},
load_app_data: {
request: z.object({}),
response: z.object({
app_data: appData,
app_data: z.string(),
}),
},
save_app_data: {
request: z.object({
app_data: z.string(),
}),
response: z.object({}),
},
};
}

1
dist/user.d.ts vendored
View file

@ -10,5 +10,4 @@ export type User = {
status_message: string;
about: string;
};
export declare const userCacheMap: Map<number, User>;
export declare function get(userId: number): Promise<User | undefined>;

2
dist/user.js vendored
View file

@ -1,4 +1,4 @@
export const userCacheMap = new Map();
const userCacheMap = new Map();
export async function get(userId) {
try {
const cachedUser = userCacheMap.get(userId);

5
package.json
View file

@ -1,6 +1,6 @@
{
"name": "@tensamin/tauth-sdk",
"version": "0.0.1",
"version": "0.0.2",
"type": "module",
"main": "./dist/index.js",
"types": "./dist/index.d.ts",
@ -15,7 +15,8 @@
}
},
"scripts": {
"build": "tsc -p tsconfig.build.json"
"build": "bun run test && tsc -p tsconfig.build.json",
"test": "bun test"
},
"devDependencies": {
"@types/bun": "^1.3.12",

87
src/index.ts
View file

@ -4,7 +4,7 @@ import {
READY_STATE,
} from "@tensamin/ttp-core";
import { createSchema } from "./schema";
import type { ZodObject } from "zod";
import type { z, ZodObject } from "zod";
import { x448 } from "@noble/curves/ed448.js";
import Bun from "bun";
import { get } from "./user";
@ -19,6 +19,7 @@ export class TAuthClient {
identifier: string;
privateKey: string;
publicKey: string;
saveSession: (userId: number, sessionId: number) => Promise<void> | void;
redirectUrl: URL;
schema: ReturnType<typeof createSchema>;
httpServer: {
@ -26,12 +27,14 @@ export class TAuthClient {
hostname: string;
};
clientMap = new Map<string, TransportClient<typeof this.schema>>();
private appData: ZodObject;
constructor({
frontendUrl,
identifier,
privateKey,
publicKey,
saveSession,
redirectUrl,
appData,
httpServer,
@ -41,6 +44,7 @@ export class TAuthClient {
identifier: string;
privateKey: string;
publicKey: string;
saveSession: (userId: number, sessionId: number) => Promise<void> | void;
redirectUrl: string;
appData: ZodObject;
httpServer?: {
@ -53,8 +57,13 @@ export class TAuthClient {
this.identifier = identifier;
this.privateKey = privateKey;
this.publicKey = publicKey;
if (typeof saveSession !== "function") {
throw new Error("[tauth] saveSession must be provided as a function");
}
this.saveSession = saveSession;
this.redirectUrl = new URL(redirectUrl);
this.schema = createSchema(appData);
this.appData = appData;
this.httpServer = httpServer ?? {
port: 7878,
hostname: "localhost",
@ -102,11 +111,7 @@ export class TAuthClient {
(await this.solveChallenge(userId, originalChallenge)) ===
potentialChallenge
) {
const { ip_address } = await fetch(
"https://omega.tensamin.net/api/get/omikron/" + userId,
).then((res) => res.json());
this.createTTP(userId, potentialSessionId, ip_address);
await this.saveSession(userId, potentialSessionId);
return new Response(
htmlSuccessPage || (await readFile("./index.html")),
@ -210,6 +215,76 @@ export class TAuthClient {
this.clientMap.get(`${userId}:${sessionId}`)?.connect();
}
async loadData(userId: number, sessionId: number) {
const connection = await this.createTemporaryTTPConnection(
userId,
sessionId,
);
const rawAppData = await connection.send("load_app_data", {});
const appData = JSON.parse(rawAppData.data.app_data);
const safeAppData = this.appData.safeParse(appData);
await connection.close();
if (!safeAppData.success) {
throw new Error(
`Invalid app data: ${JSON.stringify(safeAppData.error.issues)}`,
);
}
return safeAppData.data;
}
async saveData(userId: number, sessionId: number, data: any) {
const connection = await this.createTemporaryTTPConnection(
userId,
sessionId,
);
const safeData = this.appData.safeParse(data);
if (!safeData.success) {
throw new Error(
`Invalid app data: ${JSON.stringify(safeData.error.issues)}`,
);
}
await connection.send("save_app_data", {
app_data: JSON.stringify(safeData.data),
});
await connection.close();
}
private async createTemporaryTTPConnection(
userId: number,
sessionId: number,
): Promise<TransportClient<typeof this.schema>> {
const { ip_address } = await fetch(
"https://omega.tensamin.net/api/get/omikron/" + userId,
).then((res) => res.json());
let temporaryClient: TransportClient<typeof this.schema> | undefined;
temporaryClient = createTransportClient(this.schema, {
url: ip_address,
onReadyStateChange: (stateIndex) => {
const state = getFriendlyReadyState(stateIndex);
if (state === "OPEN") {
temporaryClient?.send("identification", {
app_identifier: this.identifier,
app_session_id: sessionId,
app_public_key: this.publicKey,
user_id: userId,
});
}
},
});
temporaryClient.connect();
return temporaryClient;
}
generateLink(challenge?: string): string {
return new URL(
`?identifier=${this.identifier}&redirect=${this.redirectUrl}${challenge ? `&challenge=${challenge}` : ""}`,

13
src/schema.ts
View file

@ -18,9 +18,20 @@ export function createSchema(appData: ZodObject) {
request: z.object({
challenge: z.base64(),
}),
response: z.object({}),
},
load_app_data: {
request: z.object({}),
response: z.object({
app_data: appData,
app_data: z.string(),
}),
},
save_app_data: {
request: z.object({
app_data: z.string(),
}),
response: z.object({}),
},
};
}

62
test/crypto.test.ts Normal file
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@ -0,0 +1,62 @@
import { describe, expect, test } from "bun:test";
import { x448 } from "@noble/curves/ed448.js";
import { decrypt, encrypt, getSharedSecret } from "../src/crypto";
function toBase64(bytes: Uint8Array): string {
if (typeof Buffer !== "undefined") {
return Buffer.from(bytes).toString("base64");
}
let binary = "";
for (const byte of bytes) {
binary += String.fromCharCode(byte);
}
return btoa(binary);
}
describe("crypto", () => {
test("encrypt/decrypt roundtrip", async () => {
const privA = new Uint8Array(56);
crypto.getRandomValues(privA);
const pubA = x448.getPublicKey(privA);
const privB = new Uint8Array(56);
crypto.getRandomValues(privB);
const pubB = x448.getPublicKey(privB);
const sharedA = await getSharedSecret(
toBase64(privA),
toBase64(pubA),
toBase64(pubB),
);
const sharedB = await getSharedSecret(
toBase64(privB),
toBase64(pubB),
toBase64(pubA),
);
expect(sharedA).toBe(sharedB);
const message = "hello tauth sdk";
const cipher = await encrypt(sharedA, message);
const plain = await decrypt(sharedB, cipher);
expect(plain).toBe(message);
});
test("decrypt fails when using wrong shared secret", async () => {
const secretA = "01".repeat(56);
const secretB = "02".repeat(56);
const cipher = await encrypt(secretA, "sensitive");
await expect(decrypt(secretB, cipher)).rejects.toThrow();
});
test("getSharedSecret rejects malformed key material", async () => {
await expect(getSharedSecret("AA==", "AA==", "AA==")).rejects.toThrow(
"not a valid X448",
);
});
});

39
test/index-helpers.test.ts Normal file
View file

@ -0,0 +1,39 @@
import { describe, expect, test } from "bun:test";
import { READY_STATE } from "@tensamin/ttp-core";
import { TAuthClient, generateKeyPair, getFriendlyReadyState } from "../src/index";
describe("index helpers", () => {
test("generateKeyPair returns base64 keys with expected length", () => {
const pair = generateKeyPair();
const priv = Buffer.from(pair.private, "base64");
const pub = Buffer.from(pair.public, "base64");
expect(priv.length).toBe(56);
expect(pub.length).toBe(56);
});
test("getFriendlyReadyState maps numeric state to key", () => {
for (const [name, value] of Object.entries(READY_STATE)) {
expect(getFriendlyReadyState(value)).toBe(name);
}
});
test("generateLink builds auth URL with and without challenge", () => {
const client = Object.create(TAuthClient.prototype) as TAuthClient;
client.frontendUrl = "https://tauth.example.com/login";
client.identifier = "my-app";
client.redirectUrl = new URL("https://app.example.com/callback");
const withoutChallenge = client.generateLink();
const withChallenge = client.generateLink("abcdef");
const parsedWithout = new URL(withoutChallenge);
const parsedWith = new URL(withChallenge);
expect(parsedWithout.searchParams.get("identifier")).toBe("my-app");
expect(parsedWithout.searchParams.get("redirect")).toBe(
"https://app.example.com/callback",
);
expect(parsedWith.searchParams.get("challenge")).toBe("abcdef");
});
});

39
test/schema.test.ts Normal file
View file

@ -0,0 +1,39 @@
import { describe, expect, test } from "bun:test";
import z from "zod";
import { createSchema } from "../src/schema";
describe("schema", () => {
const appData = z.object({
my: z.string(),
cool: z.string(),
});
const schema = createSchema(appData);
test("accepts valid identification request", () => {
const parsed = schema.identification.request.parse({
app_identifier: "app-1",
app_session_id: 42,
app_public_key: "base64key",
user_id: 123,
});
expect(parsed.user_id).toBe(123);
});
test("rejects invalid challenge response request", () => {
const result = schema.challenge_response.request.safeParse({
challenge: "not-base64",
});
expect(result.success).toBe(false);
});
test("accepts valid save_app_data request", () => {
const result = schema.save_app_data.request.safeParse({
app_data: JSON.stringify({ my: "a", cool: "b" }),
});
expect(result.success).toBe(true);
});
});

82
test/user.test.ts Normal file
View file

@ -0,0 +1,82 @@
import { afterEach, beforeEach, describe, expect, mock, test } from "bun:test";
import { get } from "../src/user";
describe("user.get", () => {
const originalFetch = globalThis.fetch;
beforeEach(() => {
// Reset mocks each test and isolate IDs to avoid cache collisions.
mock.restore();
});
afterEach(() => {
globalThis.fetch = originalFetch;
});
test("fetches and returns user data", async () => {
const fetchMock = mock(async () => {
return {
json: async () => ({
status: "ok",
username: "alice",
public_key: "pub",
user_id: 9001,
iota_id: 1,
sub_level: 0,
sub_end: 0,
display: "Alice",
status_message: "hi",
about: "about",
}),
} as Response;
});
globalThis.fetch = fetchMock as typeof fetch;
const result = await get(9001);
expect(result?.username).toBe("alice");
expect(fetchMock).toHaveBeenCalledTimes(1);
});
test("returns cached value for repeated user id", async () => {
const fetchMock = mock(async () => {
return {
json: async () => ({
status: "ok",
username: "bob",
public_key: "pub2",
user_id: 9002,
iota_id: 1,
sub_level: 0,
sub_end: 0,
display: "Bob",
status_message: "hi",
about: "about",
}),
} as Response;
});
globalThis.fetch = fetchMock as typeof fetch;
const first = await get(9002);
const second = await get(9002);
expect(first?.username).toBe("bob");
expect(second?.username).toBe("bob");
expect(fetchMock).toHaveBeenCalledTimes(1);
});
test("returns undefined when fetch fails", async () => {
const fetchMock = mock(async () => {
throw new Error("network down");
});
globalThis.fetch = fetchMock as typeof fetch;
const result = await get(9003);
expect(result).toBeUndefined();
expect(fetchMock).toHaveBeenCalledTimes(1);
});
});