Files
pixa/internal/session/session_cookie_attributes_test.go
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sneak 534b453a81
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Derive every key from the signing key in one place (closes #315)
seal.DeriveKeys derives the session hash and block keys, the encrypted URL
key and the CSRF key from the signing key, with their salts declared beside
it, and returns them as one seal.Keys. internal/providers calls it once at
startup and provides the value to the fx graph. The session manager, the
encrypted URL generator and the CSRF protection each take their own key.
session.NewManager, encurl.NewGenerator, newCSRFProtect and handlers.New
return no error, as nothing in them can fail now. Each key is derived as
before, with seal.DeriveKey and the same salt. The signing key itself stays
the HMAC key of signed URLs and the login password. README.md says under
signing_key what it protects.

Model: opus-5-5
2026-10-26 13:01:57 +00:00

95 lines
2.4 KiB
Go

package session_test
import (
"net/http"
"net/http/httptest"
"testing"
"sneak.berlin/go/pixa/internal/seal"
"sneak.berlin/go/pixa/internal/session"
)
// TestSessionCookieAttributesAlwaysSecure verifies that every cookie
// emitted by the session manager carries HttpOnly, Secure, and a
// SameSite mode of Lax or stricter. Session cookies contain the
// authentication state and must never be exposed to script (HttpOnly),
// sent over plaintext HTTP (Secure), or attached to cross-site
// requests (SameSite). Nothing may weaken these attributes.
//
// This covers both cookie-writing paths: CreateSession (the login
// set-cookie path) and ClearSession (the logout delete-cookie path).
func TestSessionCookieAttributesAlwaysSecure(t *testing.T) {
t.Parallel()
keys, err := seal.DeriveKeys("test-signing-key-12345")
if err != nil {
t.Fatalf("seal.DeriveKeys() error = %v", err)
}
mgr := session.NewManager(keys.SessionHashKey, keys.SessionBlockKey)
writePaths := []struct {
name string
setCookie func(t *testing.T, w http.ResponseWriter)
}{
{
name: "CreateSession",
setCookie: func(t *testing.T, w http.ResponseWriter) {
t.Helper()
err := mgr.CreateSession(w)
if err != nil {
t.Fatalf("CreateSession() error = %v", err)
}
},
},
{
name: "ClearSession",
setCookie: func(t *testing.T, w http.ResponseWriter) {
t.Helper()
mgr.ClearSession(w)
},
},
}
for _, writePath := range writePaths {
t.Run(writePath.name, func(t *testing.T) {
t.Parallel()
w := httptest.NewRecorder()
writePath.setCookie(t, w)
var sessionCookie *http.Cookie
for _, c := range w.Result().Cookies() {
if c.Name == session.CookieName {
sessionCookie = c
break
}
}
if sessionCookie == nil {
t.Fatalf("no cookie named %q was set", session.CookieName)
}
t.Logf("cookie attributes: HttpOnly=%v Secure=%v SameSite=%v",
sessionCookie.HttpOnly, sessionCookie.Secure, sessionCookie.SameSite)
if !sessionCookie.HttpOnly {
t.Error("session cookie must have HttpOnly set")
}
if !sessionCookie.Secure {
t.Error("session cookie must have Secure set")
}
if sessionCookie.SameSite != http.SameSiteLaxMode &&
sessionCookie.SameSite != http.SameSiteStrictMode {
t.Errorf("session cookie SameSite = %v, want Lax (%v) or Strict (%v)",
sessionCookie.SameSite, http.SameSiteLaxMode, http.SameSiteStrictMode)
}
})
}
}