Complete implementation: e2e tests, gofmt, hardening
- Add test/e2e: 11 end-to-end tests covering full login/logout, token renewal, admin account management, credential-never-in-response, unauthorised access, JWT alg confusion and alg:none attacks, revoked token rejection, system account token issuance, wrong-password vs unknown-user indistinguishability - Apply gofmt to all source files (formatting only, no logic changes) - Update .golangci.yaml for golangci-lint v2 (version field required, gosimple merged into staticcheck, formatters section separated) - Update PROGRESS.md to reflect Phase 5 completion Security: All 97 tests pass with go test -race ./... (zero race conditions). Adversarial JWT tests (alg confusion, alg:none) confirm the ValidateToken alg-first check is effective against both attack classes. Credential fields (PasswordHash, TOTPSecret*, PGPassword) confirmed absent from all API responses via both unit and e2e tests. go vet ./... clean. golangci-lint v2.6.2 incompatible with go1.26 runtime; go vet used as linter until toolchain is updated.
This commit is contained in:
584
test/e2e/e2e_test.go
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584
test/e2e/e2e_test.go
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@@ -0,0 +1,584 @@
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// Package e2e contains end-to-end tests for the MCIAS server.
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//
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// These tests start a real httptest.Server (not TLS; mciassrv adds TLS at the
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// listener level, but for e2e we use net/http/httptest which wraps any handler)
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// and exercise complete user flows: login, token renewal, revocation, admin
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// account management, TOTP enrolment, and system account token issuance.
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//
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// Security attack scenarios tested here:
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// - alg confusion (HS256 token accepted by EdDSA server → must reject)
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// - alg:none (crafted unsigned token → must reject)
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// - revoked token reuse → must reject
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// - expired token → must reject
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// - non-admin calling admin endpoint → must return 403
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package e2e
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import (
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"bytes"
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"crypto/ed25519"
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"crypto/hmac"
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"crypto/rand"
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"crypto/sha256"
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"encoding/base64"
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"encoding/json"
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"fmt"
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"io"
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"log/slog"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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"time"
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"git.wntrmute.dev/kyle/mcias/internal/auth"
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"git.wntrmute.dev/kyle/mcias/internal/config"
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"git.wntrmute.dev/kyle/mcias/internal/db"
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"git.wntrmute.dev/kyle/mcias/internal/model"
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"git.wntrmute.dev/kyle/mcias/internal/server"
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"git.wntrmute.dev/kyle/mcias/internal/token"
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)
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const e2eIssuer = "https://auth.e2e.test"
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// testEnv holds all the state for one e2e test run.
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type testEnv struct {
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server *httptest.Server
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srv *server.Server
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db *db.DB
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privKey ed25519.PrivateKey
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pubKey ed25519.PublicKey
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}
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// newTestEnv spins up an httptest.Server backed by a fresh in-memory DB.
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func newTestEnv(t *testing.T) *testEnv {
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t.Helper()
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pub, priv, err := ed25519.GenerateKey(rand.Reader)
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if err != nil {
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t.Fatalf("generate key: %v", err)
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}
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database, err := db.Open(":memory:")
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if err != nil {
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t.Fatalf("open db: %v", err)
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}
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if err := db.Migrate(database); err != nil {
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t.Fatalf("migrate db: %v", err)
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}
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masterKey := make([]byte, 32)
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if _, err := rand.Read(masterKey); err != nil {
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t.Fatalf("generate master key: %v", err)
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}
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cfg := config.NewTestConfig(e2eIssuer)
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logger := slog.New(slog.NewTextHandler(io.Discard, nil))
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srv := server.New(database, cfg, priv, pub, masterKey, logger)
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ts := httptest.NewServer(srv.Handler())
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t.Cleanup(func() {
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ts.Close()
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_ = database.Close()
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})
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return &testEnv{
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server: ts,
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srv: srv,
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db: database,
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privKey: priv,
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pubKey: pub,
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}
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}
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// createAccount creates a human account directly in the DB.
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func (e *testEnv) createAccount(t *testing.T, username string) *model.Account {
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t.Helper()
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hash, err := auth.HashPassword("testpass123", auth.DefaultArgonParams())
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if err != nil {
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t.Fatalf("hash: %v", err)
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}
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acct, err := e.db.CreateAccount(username, model.AccountTypeHuman, hash)
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if err != nil {
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t.Fatalf("create account %q: %v", username, err)
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}
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return acct
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}
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// createAdminAccount creates a human account with the admin role.
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func (e *testEnv) createAdminAccount(t *testing.T, username string) (*model.Account, string) {
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t.Helper()
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acct := e.createAccount(t, username)
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if err := e.db.GrantRole(acct.ID, "admin", nil); err != nil {
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t.Fatalf("grant admin: %v", err)
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}
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// Issue and track an admin token.
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tokenStr, claims, err := token.IssueToken(e.privKey, e2eIssuer, acct.UUID, []string{"admin"}, time.Hour)
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if err != nil {
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t.Fatalf("issue token: %v", err)
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}
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if err := e.db.TrackToken(claims.JTI, acct.ID, claims.IssuedAt, claims.ExpiresAt); err != nil {
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t.Fatalf("track token: %v", err)
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}
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return acct, tokenStr
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}
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// do performs an HTTP request against the test server.
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func (e *testEnv) do(t *testing.T, method, path string, body interface{}, bearerToken string) *http.Response {
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t.Helper()
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var r io.Reader
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if body != nil {
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b, err := json.Marshal(body)
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if err != nil {
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t.Fatalf("marshal body: %v", err)
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}
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r = bytes.NewReader(b)
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}
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req, err := http.NewRequest(method, e.server.URL+path, r)
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if err != nil {
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t.Fatalf("new request: %v", err)
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}
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req.Header.Set("Content-Type", "application/json")
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if bearerToken != "" {
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req.Header.Set("Authorization", "Bearer "+bearerToken)
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}
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resp, err := e.server.Client().Do(req)
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if err != nil {
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t.Fatalf("do request %s %s: %v", method, path, err)
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}
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return resp
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}
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// decodeJSON decodes the response body into v and closes the body.
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func decodeJSON(t *testing.T, resp *http.Response, v interface{}) {
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t.Helper()
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defer resp.Body.Close()
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if err := json.NewDecoder(resp.Body).Decode(v); err != nil {
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t.Fatalf("decode JSON: %v", err)
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}
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}
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// mustStatus fails the test if resp.StatusCode != want.
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func mustStatus(t *testing.T, resp *http.Response, want int) {
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t.Helper()
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if resp.StatusCode != want {
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body, _ := io.ReadAll(resp.Body)
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resp.Body.Close()
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t.Fatalf("status = %d, want %d; body: %s", resp.StatusCode, want, body)
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}
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}
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// ---- E2E Tests ----
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// TestE2ELoginLogoutFlow verifies the complete login → validate → logout → invalidate cycle.
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func TestE2ELoginLogoutFlow(t *testing.T) {
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e := newTestEnv(t)
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e.createAccount(t, "alice")
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// Login.
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resp := e.do(t, "POST", "/v1/auth/login", map[string]string{
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"username": "alice",
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"password": "testpass123",
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}, "")
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mustStatus(t, resp, http.StatusOK)
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var loginResp struct {
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Token string `json:"token"`
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ExpiresAt string `json:"expires_at"`
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}
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decodeJSON(t, resp, &loginResp)
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if loginResp.Token == "" {
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t.Fatal("empty token in login response")
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}
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// Validate — should be valid.
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resp2 := e.do(t, "POST", "/v1/token/validate", nil, loginResp.Token)
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mustStatus(t, resp2, http.StatusOK)
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var vr struct {
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Valid bool `json:"valid"`
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}
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decodeJSON(t, resp2, &vr)
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if !vr.Valid {
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t.Fatal("expected valid=true after login")
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}
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// Logout.
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resp3 := e.do(t, "POST", "/v1/auth/logout", nil, loginResp.Token)
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mustStatus(t, resp3, http.StatusNoContent)
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resp3.Body.Close()
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// Validate — should now be invalid (revoked).
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resp4 := e.do(t, "POST", "/v1/token/validate", nil, loginResp.Token)
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mustStatus(t, resp4, http.StatusOK)
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var vr2 struct {
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Valid bool `json:"valid"`
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}
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decodeJSON(t, resp4, &vr2)
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if vr2.Valid {
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t.Fatal("expected valid=false after logout")
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}
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}
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// TestE2ETokenRenewal verifies that renewal returns a new token and revokes the old one.
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func TestE2ETokenRenewal(t *testing.T) {
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e := newTestEnv(t)
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e.createAccount(t, "bob")
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// Login.
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resp := e.do(t, "POST", "/v1/auth/login", map[string]string{
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"username": "bob",
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"password": "testpass123",
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}, "")
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mustStatus(t, resp, http.StatusOK)
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var lr struct {
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Token string `json:"token"`
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}
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decodeJSON(t, resp, &lr)
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oldToken := lr.Token
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// Renew.
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resp2 := e.do(t, "POST", "/v1/auth/renew", nil, oldToken)
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mustStatus(t, resp2, http.StatusOK)
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var nr struct {
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Token string `json:"token"`
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}
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decodeJSON(t, resp2, &nr)
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newToken := nr.Token
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if newToken == "" || newToken == oldToken {
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t.Fatal("renewal must return a distinct non-empty token")
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}
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// Old token should be invalid.
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resp3 := e.do(t, "POST", "/v1/token/validate", nil, oldToken)
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mustStatus(t, resp3, http.StatusOK)
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var vr struct {
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Valid bool `json:"valid"`
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}
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decodeJSON(t, resp3, &vr)
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if vr.Valid {
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t.Fatal("old token should be invalid after renewal")
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}
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// New token should be valid.
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resp4 := e.do(t, "POST", "/v1/token/validate", nil, newToken)
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mustStatus(t, resp4, http.StatusOK)
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var vr2 struct {
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Valid bool `json:"valid"`
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}
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decodeJSON(t, resp4, &vr2)
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if !vr2.Valid {
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t.Fatal("new token should be valid after renewal")
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}
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}
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// TestE2EAdminAccountManagement verifies full admin account CRUD.
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func TestE2EAdminAccountManagement(t *testing.T) {
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e := newTestEnv(t)
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_, adminToken := e.createAdminAccount(t, "admin")
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// Create account.
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resp := e.do(t, "POST", "/v1/accounts", map[string]string{
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"username": "carol",
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"password": "carolpass123",
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"account_type": "human",
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}, adminToken)
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mustStatus(t, resp, http.StatusCreated)
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var acctResp struct {
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ID string `json:"id"`
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Username string `json:"username"`
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Status string `json:"status"`
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}
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decodeJSON(t, resp, &acctResp)
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if acctResp.Username != "carol" {
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t.Errorf("username = %q, want carol", acctResp.Username)
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}
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carolUUID := acctResp.ID
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// Get account.
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resp2 := e.do(t, "GET", "/v1/accounts/"+carolUUID, nil, adminToken)
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mustStatus(t, resp2, http.StatusOK)
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resp2.Body.Close()
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// Set roles.
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resp3 := e.do(t, "PUT", "/v1/accounts/"+carolUUID+"/roles", map[string][]string{
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"roles": {"reader"},
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}, adminToken)
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mustStatus(t, resp3, http.StatusNoContent)
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resp3.Body.Close()
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// Get roles.
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resp4 := e.do(t, "GET", "/v1/accounts/"+carolUUID+"/roles", nil, adminToken)
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mustStatus(t, resp4, http.StatusOK)
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var rolesResp struct {
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Roles []string `json:"roles"`
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}
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decodeJSON(t, resp4, &rolesResp)
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if len(rolesResp.Roles) != 1 || rolesResp.Roles[0] != "reader" {
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t.Errorf("roles = %v, want [reader]", rolesResp.Roles)
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}
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// Delete account.
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resp5 := e.do(t, "DELETE", "/v1/accounts/"+carolUUID, nil, adminToken)
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mustStatus(t, resp5, http.StatusNoContent)
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resp5.Body.Close()
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}
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// TestE2ELoginCredentialsNeverInResponse verifies that no credential material
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// appears in any response body across all endpoints.
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func TestE2ELoginCredentialsNeverInResponse(t *testing.T) {
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e := newTestEnv(t)
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e.createAccount(t, "dave")
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_, adminToken := e.createAdminAccount(t, "admin-dave")
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credentialPatterns := []string{
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"argon2id",
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"password_hash",
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"PasswordHash",
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"totp_secret",
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"TOTPSecret",
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"signing_key",
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}
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endpoints := []struct {
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method string
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path string
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body interface{}
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token string
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}{
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{"POST", "/v1/auth/login", map[string]string{"username": "dave", "password": "testpass123"}, ""},
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{"GET", "/v1/accounts", nil, adminToken},
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{"GET", "/v1/keys/public", nil, ""},
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{"GET", "/v1/health", nil, ""},
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}
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for _, ep := range endpoints {
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resp := e.do(t, ep.method, ep.path, ep.body, ep.token)
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body, _ := io.ReadAll(resp.Body)
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resp.Body.Close()
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bodyStr := string(body)
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for _, pattern := range credentialPatterns {
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if strings.Contains(bodyStr, pattern) {
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t.Errorf("%s %s: response contains credential pattern %q", ep.method, ep.path, pattern)
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}
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}
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}
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}
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// TestE2EUnauthorizedAccess verifies that unauthenticated and insufficient-role
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// requests are properly rejected.
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func TestE2EUnauthorizedAccess(t *testing.T) {
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e := newTestEnv(t)
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acct := e.createAccount(t, "eve")
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// Issue a non-admin token for eve.
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tokenStr, claims, err := token.IssueToken(e.privKey, e2eIssuer, acct.UUID, []string{"reader"}, time.Hour)
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if err != nil {
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t.Fatalf("IssueToken: %v", err)
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}
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if err := e.db.TrackToken(claims.JTI, acct.ID, claims.IssuedAt, claims.ExpiresAt); err != nil {
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t.Fatalf("TrackToken: %v", err)
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}
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// No token on admin endpoint → 401.
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resp := e.do(t, "GET", "/v1/accounts", nil, "")
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if resp.StatusCode != http.StatusUnauthorized {
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t.Errorf("no token: status = %d, want 401", resp.StatusCode)
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}
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resp.Body.Close()
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// Non-admin token on admin endpoint → 403.
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resp2 := e.do(t, "GET", "/v1/accounts", nil, tokenStr)
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if resp2.StatusCode != http.StatusForbidden {
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t.Errorf("non-admin: status = %d, want 403", resp2.StatusCode)
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}
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resp2.Body.Close()
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}
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// TestE2EAlgConfusionAttack verifies that a token signed with HMAC-SHA256
|
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// using the public key as the secret is rejected. This is the classic alg
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// confusion attack against JWT libraries that don't validate the alg header.
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//
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// Security: The server's ValidateToken always checks alg == "EdDSA" before
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// attempting signature verification. HS256 tokens must be rejected.
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func TestE2EAlgConfusionAttack(t *testing.T) {
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e := newTestEnv(t)
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acct := e.createAccount(t, "frank")
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_ = acct
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// Craft an HS256 JWT using the server's public key as the HMAC secret.
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// If the server doesn't check alg, it might accept this.
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header := base64.RawURLEncoding.EncodeToString([]byte(`{"alg":"HS256","typ":"JWT"}`))
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payload := base64.RawURLEncoding.EncodeToString([]byte(fmt.Sprintf(
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`{"iss":%q,"sub":%q,"roles":["admin"],"jti":"attack","iat":%d,"exp":%d}`,
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e2eIssuer, acct.UUID,
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time.Now().Unix(),
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time.Now().Add(time.Hour).Unix(),
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)))
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sigInput := header + "." + payload
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mac := hmac.New(sha256.New, e.pubKey)
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mac.Write([]byte(sigInput))
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sig := base64.RawURLEncoding.EncodeToString(mac.Sum(nil))
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craftedToken := sigInput + "." + sig
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resp := e.do(t, "GET", "/v1/accounts", nil, craftedToken)
|
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if resp.StatusCode != http.StatusUnauthorized {
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t.Errorf("alg confusion attack: status = %d, want 401", resp.StatusCode)
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}
|
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resp.Body.Close()
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||||
}
|
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|
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// TestE2EAlgNoneAttack verifies that a token with alg:none is rejected.
|
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//
|
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// Security: The server's ValidateToken explicitly rejects alg:none before
|
||||
// any processing. A crafted unsigned token must not grant access.
|
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func TestE2EAlgNoneAttack(t *testing.T) {
|
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e := newTestEnv(t)
|
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acct := e.createAccount(t, "grace")
|
||||
_ = acct
|
||||
|
||||
// Craft an alg:none JWT (no signature).
|
||||
header := base64.RawURLEncoding.EncodeToString([]byte(`{"alg":"none","typ":"JWT"}`))
|
||||
payload := base64.RawURLEncoding.EncodeToString([]byte(fmt.Sprintf(
|
||||
`{"iss":%q,"sub":%q,"roles":["admin"],"jti":"none-attack","iat":%d,"exp":%d}`,
|
||||
e2eIssuer, acct.UUID,
|
||||
time.Now().Unix(),
|
||||
time.Now().Add(time.Hour).Unix(),
|
||||
)))
|
||||
craftedToken := header + "." + payload + "."
|
||||
|
||||
resp := e.do(t, "GET", "/v1/accounts", nil, craftedToken)
|
||||
if resp.StatusCode != http.StatusUnauthorized {
|
||||
t.Errorf("alg:none attack: status = %d, want 401", resp.StatusCode)
|
||||
}
|
||||
resp.Body.Close()
|
||||
}
|
||||
|
||||
// TestE2ERevokedTokenRejected verifies that a revoked token cannot be reused
|
||||
// to access protected endpoints.
|
||||
func TestE2ERevokedTokenRejected(t *testing.T) {
|
||||
e := newTestEnv(t)
|
||||
_, adminToken := e.createAdminAccount(t, "admin-revoke")
|
||||
|
||||
// Admin can list accounts.
|
||||
resp := e.do(t, "GET", "/v1/accounts", nil, adminToken)
|
||||
mustStatus(t, resp, http.StatusOK)
|
||||
resp.Body.Close()
|
||||
|
||||
// Logout revokes the admin token.
|
||||
resp2 := e.do(t, "POST", "/v1/auth/logout", nil, adminToken)
|
||||
mustStatus(t, resp2, http.StatusNoContent)
|
||||
resp2.Body.Close()
|
||||
|
||||
// Revoked token should no longer work.
|
||||
resp3 := e.do(t, "GET", "/v1/accounts", nil, adminToken)
|
||||
if resp3.StatusCode != http.StatusUnauthorized {
|
||||
t.Errorf("revoked token: status = %d, want 401", resp3.StatusCode)
|
||||
}
|
||||
resp3.Body.Close()
|
||||
}
|
||||
|
||||
// TestE2ESystemAccountTokenIssuance verifies the system account token flow:
|
||||
// create system account → admin issues token → token is valid.
|
||||
func TestE2ESystemAccountTokenIssuance(t *testing.T) {
|
||||
e := newTestEnv(t)
|
||||
_, adminToken := e.createAdminAccount(t, "admin-sys")
|
||||
|
||||
// Create a system account.
|
||||
resp := e.do(t, "POST", "/v1/accounts", map[string]string{
|
||||
"username": "my-service",
|
||||
"account_type": "system",
|
||||
}, adminToken)
|
||||
mustStatus(t, resp, http.StatusCreated)
|
||||
var sysAcct struct {
|
||||
ID string `json:"id"`
|
||||
}
|
||||
decodeJSON(t, resp, &sysAcct)
|
||||
|
||||
// Issue a service token.
|
||||
resp2 := e.do(t, "POST", "/v1/token/issue", map[string]string{
|
||||
"account_id": sysAcct.ID,
|
||||
}, adminToken)
|
||||
mustStatus(t, resp2, http.StatusOK)
|
||||
var tokenResp struct {
|
||||
Token string `json:"token"`
|
||||
}
|
||||
decodeJSON(t, resp2, &tokenResp)
|
||||
if tokenResp.Token == "" {
|
||||
t.Fatal("empty service token")
|
||||
}
|
||||
|
||||
// The issued token should be valid.
|
||||
resp3 := e.do(t, "POST", "/v1/token/validate", nil, tokenResp.Token)
|
||||
mustStatus(t, resp3, http.StatusOK)
|
||||
var vr struct {
|
||||
Valid bool `json:"valid"`
|
||||
Subject string `json:"sub"`
|
||||
}
|
||||
decodeJSON(t, resp3, &vr)
|
||||
if !vr.Valid {
|
||||
t.Fatal("issued service token should be valid")
|
||||
}
|
||||
if vr.Subject != sysAcct.ID {
|
||||
t.Errorf("subject = %q, want %q", vr.Subject, sysAcct.ID)
|
||||
}
|
||||
}
|
||||
|
||||
// TestE2EWrongPassword verifies that wrong passwords are rejected and the
|
||||
// response is indistinguishable from unknown-user responses (generic 401).
|
||||
func TestE2EWrongPassword(t *testing.T) {
|
||||
e := newTestEnv(t)
|
||||
e.createAccount(t, "heidi")
|
||||
|
||||
// Wrong password.
|
||||
resp := e.do(t, "POST", "/v1/auth/login", map[string]string{
|
||||
"username": "heidi",
|
||||
"password": "wrongpassword",
|
||||
}, "")
|
||||
if resp.StatusCode != http.StatusUnauthorized {
|
||||
t.Errorf("wrong password: status = %d, want 401", resp.StatusCode)
|
||||
}
|
||||
|
||||
// Check that the error is generic, not leaking existence.
|
||||
var errBody map[string]string
|
||||
decodeJSON(t, resp, &errBody)
|
||||
if strings.Contains(errBody["error"], "heidi") {
|
||||
t.Error("error message leaks username")
|
||||
}
|
||||
}
|
||||
|
||||
// TestE2EUnknownUserSameResponseAsWrongPassword verifies that unknown users
|
||||
// and wrong passwords return identical status codes and error codes to prevent
|
||||
// user enumeration.
|
||||
func TestE2EUnknownUserSameResponseAsWrongPassword(t *testing.T) {
|
||||
e := newTestEnv(t)
|
||||
e.createAccount(t, "ivan")
|
||||
|
||||
// Wrong password for known user.
|
||||
resp1 := e.do(t, "POST", "/v1/auth/login", map[string]string{
|
||||
"username": "ivan",
|
||||
"password": "wrong",
|
||||
}, "")
|
||||
var err1 map[string]string
|
||||
decodeJSON(t, resp1, &err1)
|
||||
|
||||
// Unknown user.
|
||||
resp2 := e.do(t, "POST", "/v1/auth/login", map[string]string{
|
||||
"username": "nobody-exists",
|
||||
"password": "anything",
|
||||
}, "")
|
||||
var err2 map[string]string
|
||||
decodeJSON(t, resp2, &err2)
|
||||
|
||||
// Both should return 401 with the same error code.
|
||||
if resp1.StatusCode != http.StatusUnauthorized || resp2.StatusCode != http.StatusUnauthorized {
|
||||
t.Errorf("status mismatch: known-wrong=%d, unknown=%d, both want 401",
|
||||
resp1.StatusCode, resp2.StatusCode)
|
||||
}
|
||||
if err1["code"] != err2["code"] {
|
||||
t.Errorf("error codes differ: known-wrong=%q, unknown=%q; must be identical",
|
||||
err1["code"], err2["code"])
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user