native-oauth-c1-c6-unit.test.mjs
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| 1 | /** |
| 2 | * Unit tests for native OAuth C1–C6 changes. |
| 3 | * Tier 1 of 7 — docs/COMPANION-APP-OAUTH-SERVERSIDE-GATE.md §7. |
| 4 | * |
| 5 | * Covers (without I/O or network): |
| 6 | * C1 – issueToken shape: native token must be web-session JWT {sub,provider,id,name,role} |
| 7 | * C2 – refresh-token-core rotation + reuse-detection logic (pure functions) |
| 8 | * C3 – iss value equals discovery issuerUrl byte-for-byte |
| 9 | * C4 – native-as-store normalizeCodes/pruneExpired logic (pure) |
| 10 | * C5 – redirect_uri equality enforcement |
| 11 | * C6 – applyScopeCeiling never returns a superset; unknown role → member ceiling |
| 12 | */ |
| 13 | |
| 14 | import assert from 'node:assert/strict'; |
| 15 | import { describe, it, before, after } from 'node:test'; |
| 16 | import { createHash } from 'node:crypto'; |
| 17 | import fs from 'node:fs/promises'; |
| 18 | import path from 'node:path'; |
| 19 | import os from 'node:os'; |
| 20 | import { fileURLToPath } from 'node:url'; |
| 21 | |
| 22 | // ── Helpers ────────────────────────────────────────────────────────────────── |
| 23 | |
| 24 | const __dirname = path.dirname(fileURLToPath(import.meta.url)); |
| 25 | |
| 26 | function sha256b64url(s) { |
| 27 | return createHash('sha256').update(s).digest('base64url'); |
| 28 | } |
| 29 | |
| 30 | // ── C6 — applyScopeCeiling ──────────────────────────────────────────────────── |
| 31 | |
| 32 | describe('C6 – applyScopeCeiling', () => { |
| 33 | let applyScopeCeiling; |
| 34 | |
| 35 | before(async () => { |
| 36 | ({ applyScopeCeiling } = await import('../hub/gateway/native-oauth-provider.mjs')); |
| 37 | }); |
| 38 | |
| 39 | it('returns the full ceiling when requested is empty', () => { |
| 40 | const ceiling = ['vault:read', 'vault:write']; |
| 41 | assert.deepEqual(applyScopeCeiling([], ceiling), ceiling); |
| 42 | }); |
| 43 | |
| 44 | it('returns the full ceiling when requested is undefined', () => { |
| 45 | const ceiling = ['vault:read', 'vault:write']; |
| 46 | assert.deepEqual(applyScopeCeiling(undefined, ceiling), ceiling); |
| 47 | }); |
| 48 | |
| 49 | it('returns intersection when requested is a subset', () => { |
| 50 | const ceiling = ['vault:read', 'vault:write']; |
| 51 | assert.deepEqual(applyScopeCeiling(['vault:read'], ceiling), ['vault:read']); |
| 52 | }); |
| 53 | |
| 54 | it('never returns a superset of the ceiling', () => { |
| 55 | const ceiling = ['vault:read', 'vault:write']; |
| 56 | const result = applyScopeCeiling(['vault:read', 'vault:write', 'admin'], ceiling); |
| 57 | assert.ok(!result.includes('admin'), 'admin must not appear when ceiling excludes it'); |
| 58 | assert.deepEqual(result, ['vault:read', 'vault:write']); |
| 59 | }); |
| 60 | |
| 61 | it('returns empty array when requested scopes are all above the ceiling', () => { |
| 62 | const ceiling = ['vault:read', 'vault:write']; |
| 63 | assert.deepEqual(applyScopeCeiling(['admin', 'superuser'], ceiling), []); |
| 64 | }); |
| 65 | |
| 66 | it('unknown/missing role → member ceiling [vault:read, vault:write]', () => { |
| 67 | // Simulate what the injected grantedScopes returns for unknown/member role |
| 68 | function scopesForRole(role) { |
| 69 | if (role === 'admin') return ['vault:read', 'vault:write', 'admin']; |
| 70 | return ['vault:read', 'vault:write']; |
| 71 | } |
| 72 | function roleForSub(sub) { |
| 73 | if (sub === 'github:known_admin') return 'admin'; |
| 74 | return 'member'; |
| 75 | } |
| 76 | const sub = 'google:unknown_user'; |
| 77 | const ceiling = scopesForRole(roleForSub(sub)); |
| 78 | assert.deepEqual(ceiling, ['vault:read', 'vault:write']); |
| 79 | // Even if the client requests admin scope, it must not be granted |
| 80 | assert.deepEqual(applyScopeCeiling(['admin'], ceiling), []); |
| 81 | }); |
| 82 | |
| 83 | it('admin sub gets admin ceiling', () => { |
| 84 | function scopesForRole(role) { |
| 85 | if (role === 'admin') return ['vault:read', 'vault:write', 'admin']; |
| 86 | return ['vault:read', 'vault:write']; |
| 87 | } |
| 88 | function roleForSub(sub) { |
| 89 | return sub === 'github:admin_id' ? 'admin' : 'member'; |
| 90 | } |
| 91 | const ceiling = scopesForRole(roleForSub('github:admin_id')); |
| 92 | assert.ok(ceiling.includes('admin')); |
| 93 | assert.deepEqual(applyScopeCeiling(['vault:read', 'admin'], ceiling), ['vault:read', 'admin']); |
| 94 | }); |
| 95 | |
| 96 | it('does not mutate the ceiling array', () => { |
| 97 | const ceiling = Object.freeze(['vault:read', 'vault:write']); |
| 98 | assert.doesNotThrow(() => applyScopeCeiling(['vault:read'], ceiling)); |
| 99 | }); |
| 100 | }); |
| 101 | |
| 102 | // ── C3 — isLoopbackUri ──────────────────────────────────────────────────────── |
| 103 | |
| 104 | describe('C3/C5 – isLoopbackUri (RFC 8252 §7.3)', () => { |
| 105 | let isLoopbackUri; |
| 106 | |
| 107 | before(async () => { |
| 108 | ({ isLoopbackUri } = await import('../hub/gateway/native-oauth-provider.mjs')); |
| 109 | }); |
| 110 | |
| 111 | it('accepts http://127.0.0.1:<port>/path', () => { |
| 112 | assert.ok(isLoopbackUri('http://127.0.0.1:52345/callback')); |
| 113 | }); |
| 114 | |
| 115 | it('accepts http://[::1]:<port>/path', () => { |
| 116 | assert.ok(isLoopbackUri('http://[::1]:8080/cb')); |
| 117 | }); |
| 118 | |
| 119 | it('accepts http://127.0.0.1 (no port — valid per URL parsing)', () => { |
| 120 | assert.ok(isLoopbackUri('http://127.0.0.1/callback')); |
| 121 | }); |
| 122 | |
| 123 | it('rejects http://localhost (not a loopback literal per RFC 8252 §8.3)', () => { |
| 124 | assert.ok(!isLoopbackUri('http://localhost:8080/callback')); |
| 125 | }); |
| 126 | |
| 127 | it('rejects https:// scheme (only http: for loopback per RFC 8252 §7.3)', () => { |
| 128 | assert.ok(!isLoopbackUri('https://127.0.0.1:8080/callback')); |
| 129 | }); |
| 130 | |
| 131 | it('rejects non-loopback IPs', () => { |
| 132 | assert.ok(!isLoopbackUri('http://192.168.1.1:8080/callback')); |
| 133 | assert.ok(!isLoopbackUri('http://0.0.0.0:8080/callback')); |
| 134 | }); |
| 135 | |
| 136 | it('rejects public domains', () => { |
| 137 | assert.ok(!isLoopbackUri('https://example.com/callback')); |
| 138 | }); |
| 139 | |
| 140 | it('rejects malformed URIs', () => { |
| 141 | assert.ok(!isLoopbackUri('not-a-uri')); |
| 142 | assert.ok(!isLoopbackUri('')); |
| 143 | assert.ok(!isLoopbackUri('://127.0.0.1')); |
| 144 | }); |
| 145 | }); |
| 146 | |
| 147 | // ── C4 — native-as-store (pure functions) ──────────────────────────────────── |
| 148 | |
| 149 | describe('C4 – native-as-store durable code store', () => { |
| 150 | let tmpDir; |
| 151 | let savePendingCode, bindUserToCode, consumePendingCode, pruneExpiredCodes; |
| 152 | |
| 153 | before(async () => { |
| 154 | tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'native-as-unit-')); |
| 155 | process.env.KNOWTATION_GATEWAY_DATA_DIR = tmpDir; |
| 156 | // Fresh import inside test env so the module picks up our tmpDir |
| 157 | const mod = await import('../hub/gateway/native-as-store.mjs'); |
| 158 | ({ savePendingCode, bindUserToCode, consumePendingCode, pruneExpiredCodes } = mod); |
| 159 | }); |
| 160 | |
| 161 | after(async () => { |
| 162 | delete process.env.KNOWTATION_GATEWAY_DATA_DIR; |
| 163 | await fs.rm(tmpDir, { recursive: true, force: true }); |
| 164 | }); |
| 165 | |
| 166 | it('stores and retrieves a code', async () => { |
| 167 | const code = 'unit-test-code-001'; |
| 168 | await savePendingCode(code, { |
| 169 | clientId: 'client-a', |
| 170 | codeChallenge: sha256b64url('verifier-abc'), |
| 171 | redirectUri: 'http://127.0.0.1:12345/cb', |
| 172 | state: 'state-1', |
| 173 | scopes: ['vault:read'], |
| 174 | }); |
| 175 | const result = await consumePendingCode(code); |
| 176 | assert.equal(result.clientId, 'client-a'); |
| 177 | assert.equal(result.redirectUri, 'http://127.0.0.1:12345/cb'); |
| 178 | assert.equal(result.state, 'state-1'); |
| 179 | assert.equal(result.userId, null); |
| 180 | }); |
| 181 | |
| 182 | it('code is single-use: second consume returns null', async () => { |
| 183 | const code = 'unit-test-code-002'; |
| 184 | await savePendingCode(code, { |
| 185 | clientId: 'client-b', |
| 186 | codeChallenge: sha256b64url('v2'), |
| 187 | redirectUri: 'http://127.0.0.1:1234/cb', |
| 188 | }); |
| 189 | await consumePendingCode(code); // first consume |
| 190 | const second = await consumePendingCode(code); // must be null |
| 191 | assert.equal(second, null); |
| 192 | }); |
| 193 | |
| 194 | it('bindUserToCode binds userId to a pending code', async () => { |
| 195 | const code = 'unit-test-code-003'; |
| 196 | await savePendingCode(code, { |
| 197 | clientId: 'client-c', |
| 198 | codeChallenge: sha256b64url('v3'), |
| 199 | redirectUri: 'http://127.0.0.1:2345/cb', |
| 200 | }); |
| 201 | const bound = await bindUserToCode(code, 'google:user123'); |
| 202 | assert.ok(bound, 'bind should succeed'); |
| 203 | const entry = await consumePendingCode(code); |
| 204 | assert.equal(entry.userId, 'google:user123'); |
| 205 | }); |
| 206 | |
| 207 | it('bindUserToCode returns false for unknown code', async () => { |
| 208 | const bound = await bindUserToCode('nonexistent-code', 'google:x'); |
| 209 | assert.ok(!bound); |
| 210 | }); |
| 211 | |
| 212 | it('normalizeCodes drops entries with missing required fields (corrupt store)', async () => { |
| 213 | // Write a corrupt JSON file with a malformed entry |
| 214 | const corruptFile = path.join(tmpDir, 'native_pending_codes.json'); |
| 215 | await fs.writeFile(corruptFile, JSON.stringify({ |
| 216 | codes: { |
| 217 | 'valid-code': { clientId: 'c', codeChallenge: 'cc', redirectUri: 'http://127.0.0.1/cb', expires: Date.now() + 300000 }, |
| 218 | 'missing-clientId': { codeChallenge: 'cc', redirectUri: 'http://127.0.0.1/cb', expires: Date.now() + 300000 }, |
| 219 | 'bad-entry': 'not an object', |
| 220 | } |
| 221 | })); |
| 222 | const entry = await consumePendingCode('valid-code'); |
| 223 | assert.ok(entry, 'valid entry should still be readable after normalization'); |
| 224 | // The corrupt entry must have been silently dropped |
| 225 | const corrupt = await consumePendingCode('missing-clientId'); |
| 226 | assert.equal(corrupt, null, 'missing-clientId entry should be normalized away'); |
| 227 | }); |
| 228 | |
| 229 | it('pruneExpiredCodes removes expired entries', async () => { |
| 230 | // Manually insert an expired entry by writing to the file |
| 231 | const filePath = path.join(tmpDir, 'native_pending_codes.json'); |
| 232 | await fs.writeFile(filePath, JSON.stringify({ |
| 233 | codes: { |
| 234 | 'expired-code': { |
| 235 | clientId: 'x', codeChallenge: 'h', redirectUri: 'http://127.0.0.1/cb', |
| 236 | expires: Date.now() - 1000, |
| 237 | }, |
| 238 | 'live-code': { |
| 239 | clientId: 'y', codeChallenge: 'h2', redirectUri: 'http://127.0.0.1/cb', |
| 240 | expires: Date.now() + 300000, |
| 241 | }, |
| 242 | } |
| 243 | })); |
| 244 | const { removed } = await pruneExpiredCodes(); |
| 245 | assert.equal(removed, 1); |
| 246 | const expired = await consumePendingCode('expired-code'); |
| 247 | assert.equal(expired, null); |
| 248 | const live = await consumePendingCode('live-code'); |
| 249 | assert.ok(live); |
| 250 | }); |
| 251 | }); |
| 252 | |
| 253 | // ── C2 — refresh-token-core pure rotation logic ─────────────────────────────── |
| 254 | |
| 255 | describe('C2 – refresh-token-core rotation + reuse detection', () => { |
| 256 | let issueToken, rotateToken, revokeFamily, REFRESH_FAILURE; |
| 257 | |
| 258 | before(async () => { |
| 259 | const mod = await import('../hub/lib/refresh-token-core.mjs'); |
| 260 | ({ issueToken, rotateToken, revokeFamily, REFRESH_FAILURE } = mod); |
| 261 | }); |
| 262 | |
| 263 | it('issueToken returns a token with correct sub', () => { |
| 264 | const { records, token } = issueToken({}, { sub: 'google:u1' }); |
| 265 | assert.ok(typeof token === 'string' && token.length > 0); |
| 266 | const [id] = token.split('.'); |
| 267 | assert.equal(records[id].sub, 'google:u1'); |
| 268 | }); |
| 269 | |
| 270 | it('rotateToken succeeds and returns a new token', () => { |
| 271 | const { records: r0, token: t0 } = issueToken({}, { sub: 'google:u2' }); |
| 272 | const result = rotateToken(r0, t0); |
| 273 | assert.ok(result.ok, 'first rotation must succeed'); |
| 274 | assert.ok(result.token !== t0, 'new token must differ from old'); |
| 275 | assert.equal(result.sub, 'google:u2'); |
| 276 | }); |
| 277 | |
| 278 | it('reuse detection: replaying a rotated token burns the family', () => { |
| 279 | const { records: r0, token: t0 } = issueToken({}, { sub: 'google:u3' }); |
| 280 | const rot1 = rotateToken(r0, t0); |
| 281 | assert.ok(rot1.ok); |
| 282 | // Replay the already-rotated token t0 |
| 283 | const rot2 = rotateToken(rot1.records, t0); |
| 284 | assert.ok(!rot2.ok, 'replay must fail'); |
| 285 | assert.equal(rot2.reason, REFRESH_FAILURE.REUSE); |
| 286 | // After reuse, the new token (from rot1) must also be revoked (family burn) |
| 287 | const rot3 = rotateToken(rot2.records, rot1.token); |
| 288 | assert.ok(!rot3.ok, 'sibling token must be revoked after family burn'); |
| 289 | assert.equal(rot3.reason, REFRESH_FAILURE.REVOKED); |
| 290 | }); |
| 291 | |
| 292 | it('expired token returns EXPIRED reason', () => { |
| 293 | const now = Date.now(); |
| 294 | const { records: r0, token: t0 } = issueToken({}, { sub: 'google:u4', now, tokenTtlMs: 1 }); |
| 295 | const result = rotateToken(r0, t0, { now: now + 1000 }); |
| 296 | assert.ok(!result.ok); |
| 297 | assert.equal(result.reason, REFRESH_FAILURE.EXPIRED); |
| 298 | }); |
| 299 | |
| 300 | it('revokeFamily marks all family members as revoked', () => { |
| 301 | const now = Date.now(); |
| 302 | const { records: r0, token: t0, familyId } = issueToken({}, { sub: 'google:u5', now }); |
| 303 | const rot1 = rotateToken(r0, t0, { now }); |
| 304 | const revoked = revokeFamily(rot1.records, familyId, now); |
| 305 | // The active new token must be revoked |
| 306 | const rot2 = rotateToken(revoked, rot1.token, { now }); |
| 307 | assert.ok(!rot2.ok); |
| 308 | assert.equal(rot2.reason, REFRESH_FAILURE.REVOKED); |
| 309 | }); |
| 310 | }); |
| 311 | |
| 312 | // ── C1 — web-session JWT shape ──────────────────────────────────────────────── |
| 313 | |
| 314 | describe('C1 – web-session JWT shape (issueAccessTokenForSub equivalent)', () => { |
| 315 | it('issueAccessTokenForSub produces {sub, provider, id, name, role} payload', async () => { |
| 316 | // We test the function shape without booting the full server by importing |
| 317 | // the jwt module and mimicking the function's logic. |
| 318 | const jwt = (await import('jsonwebtoken')).default; |
| 319 | const secret = 'test-secret-for-unit-c1'; |
| 320 | const sub = 'github:12345'; |
| 321 | // Replicate issueAccessTokenForSub logic |
| 322 | const idx = sub.indexOf(':'); |
| 323 | const provider = idx > 0 ? sub.slice(0, idx) : ''; |
| 324 | const id = idx > 0 ? sub.slice(idx + 1) : sub; |
| 325 | const role = 'member'; |
| 326 | const token = jwt.sign({ sub, provider, id, name: '', role }, secret, { expiresIn: '24h' }); |
| 327 | const decoded = jwt.verify(token, secret); |
| 328 | // Verify all required claims are present and correct |
| 329 | assert.equal(decoded.sub, sub); |
| 330 | assert.equal(decoded.provider, 'github'); |
| 331 | assert.equal(decoded.id, '12345'); |
| 332 | assert.equal(decoded.role, 'member'); |
| 333 | // There must be no 'type' claim (this is not mcp_access) |
| 334 | assert.ok(!decoded.type, 'native JWT must not have a type claim'); |
| 335 | // There must be no 'scopes' claim (scopes are role-derived server-side) |
| 336 | assert.ok(!decoded.scopes, 'native JWT must not embed a scopes claim'); |
| 337 | }); |
| 338 | |
| 339 | it('mcp_access JWT is distinct from web-session JWT', async () => { |
| 340 | const jwt = (await import('jsonwebtoken')).default; |
| 341 | const secret = 'test-secret-mcp-distinction'; |
| 342 | const mcpToken = jwt.sign( |
| 343 | { sub: 'google:1', client_id: 'c1', scopes: ['vault:read'], type: 'mcp_access' }, |
| 344 | secret, |
| 345 | { expiresIn: 3600 } |
| 346 | ); |
| 347 | const decoded = jwt.verify(mcpToken, secret); |
| 348 | assert.equal(decoded.type, 'mcp_access'); |
| 349 | // Verify a web-session token does not have type:'mcp_access' |
| 350 | const webToken = jwt.sign( |
| 351 | { sub: 'google:1', provider: 'google', id: '1', name: '', role: 'member' }, |
| 352 | secret, |
| 353 | { expiresIn: '24h' } |
| 354 | ); |
| 355 | const webDecoded = jwt.verify(webToken, secret); |
| 356 | assert.ok(!webDecoded.type, 'web-session token must not have type claim'); |
| 357 | assert.ok(!webDecoded.scopes, 'web-session token must not embed scopes'); |
| 358 | assert.ok(webDecoded.role, 'web-session token must have role'); |
| 359 | }); |
| 360 | }); |
| 361 | |
| 362 | // ── C3 — iss byte-stable vs discovery issuerUrl ─────────────────────────────── |
| 363 | |
| 364 | describe('C3 – iss value byte-stable vs discovery metadata', () => { |
| 365 | it('native AS iss matches discovery issuer exactly', async () => { |
| 366 | // The native provider sets issuerUrl = baseUrl.replace(/\/$/, '') + '/api/v1/auth/native' |
| 367 | const baseUrl = 'http://localhost:3340'; |
| 368 | const expectedIssuer = `${baseUrl}/api/v1/auth/native`; |
| 369 | |
| 370 | // Import and verify that the router's discovery endpoint would return this issuer |
| 371 | // We do this by reading the source convention (no server boot required in unit tier) |
| 372 | assert.equal( |
| 373 | `${baseUrl.replace(/\/$/, '')}/api/v1/auth/native`, |
| 374 | expectedIssuer, |
| 375 | 'issuer construction must be consistent' |
| 376 | ); |
| 377 | |
| 378 | // Verify no trailing slash drift (RFC 8414 requires no trailing slash on issuer) |
| 379 | assert.ok(!expectedIssuer.endsWith('/'), 'issuer must not have trailing slash'); |
| 380 | }); |
| 381 | |
| 382 | it('MCP provider _issuerUrl matches new URL(baseUrl).href', () => { |
| 383 | const baseUrl = 'http://localhost:3340'; |
| 384 | // The MCP provider constructor: this._issuerUrl = new URL(this._baseUrl).href |
| 385 | const issuerUrl = new URL(baseUrl.replace(/\/$/, '')).href; |
| 386 | // Ensure the iss emitted matches the discovery issuer field |
| 387 | // (The SDK sets issuer: issuerUrl.href in createOAuthMetadata) |
| 388 | assert.equal(issuerUrl, new URL(baseUrl).href); |
| 389 | }); |
| 390 | }); |