Files
bookhoard/cmd/server/tests/rls_visibility_test.go
T

274 lines
11 KiB
Go

package main
// rls_visibility_test.go — the PERMANENT black-box auditor for per-user
// library visibility (the "family lens").
//
// The one sentence it asserts, in the user's language:
//
// A user with a library hidden sees NOTHING from that library, on
// ANY media-returning surface — while an admin still sees it (the
// hide is per-user, never global).
//
// Implementation-agnostic on purpose: it speaks only HTTP + response
// bodies, so it stays valid regardless of HOW enforcement is done
// (per-query visible_library_ids clauses today, Postgres RLS in the
// RLS rollout, anything tomorrow). It is the auditor that makes a
// forgotten surface a failing test instead of a silent leak.
//
// Red/green history: RED at introduction on the dashboard-section and
// collection-detail (mobile View All) surfaces, whose queries never
// carried the visible_library_ids clause; GREEN once enforcement
// covers every surface (plan:
// ~/.opencode/plan/server-rls-library-visibility.md).
import (
"context"
"fmt"
"net/http"
"regexp"
"strings"
"testing"
"github.com/google/uuid"
"github.com/jackc/pgx/v5/pgtype"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"bookhoard/internal/database"
)
// uuidInBody finds candidate collection ids in a dashboard-sections
// body so the View-All detail endpoint can be probed without coupling
// the test to the response shape.
var rlsUUIDPattern = regexp.MustCompile(`[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}`)
func TestRlsInvariant(t *testing.T) {
setup := setupTestServer(t)
ctx := context.Background()
adminToken := setup.Token
regularToken := setup.RegularToken
regularID := getRegularUserID(t, setup.DB)
// Unique markers: one for the hidden library's whole subtree
// (library name + both book titles — a single string that must
// appear NOWHERE), one for the visible control book.
hiddenMarker := fmt.Sprintf("RLSHIDE%s", uuid.New().String()[:8])
controlMarker := fmt.Sprintf("RLSCTRL%s", uuid.New().String()[:8])
libType, err := setup.DB.GetLibraryTypeByName(ctx, "ebooks")
require.NoError(t, err, "ebooks library type should exist")
createLib := func(name string) database.Libraries {
lib, cerr := setup.DB.CreateLibrary(ctx, database.CreateLibraryParams{
Name: name,
Description: pgtype.Text{String: "rls invariant test library", Valid: true},
LibraryTypeID: libType.ID,
CreatedByAdminID: pgtype.UUID{Bytes: [16]byte(regularID), Valid: true},
})
require.NoError(t, cerr, "create library %q", name)
// Deleting the library cascades its media_items AND its
// library_visibility rows (FK ON DELETE CASCADE) — one cleanup
// covers the whole subtree.
t.Cleanup(func() { _ = setup.DB.DeleteLibrary(ctx, lib.ID) })
return lib
}
libH := createLib("RLS Test Hidden Library " + hiddenMarker)
libV := createLib("RLS Test Visible Library " + controlMarker)
createBook := func(libraryID pgtype.UUID, title string) {
_, cerr := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
LibraryID: libraryID,
Title: title,
Authors: []string{"RLS Invariant Author"},
FilePath: fmt.Sprintf("/tmp/rls-invariant/%s-%s.epub", title, uuid.New().String()),
FileSize: pgtype.Int8{Int64: 1024, Valid: true},
MimeType: pgtype.Text{String: "application/epub+zip", Valid: true},
})
require.NoError(t, cerr, "create book %q", title)
}
createBook(libH.ID, hiddenMarker+" Hidden Alpha")
createBook(libH.ID, hiddenMarker+" Hidden Beta")
createBook(libV.ID, controlMarker+" Visible Gamma")
// Hide libH from the REGULAR user — the same row the admin
// visibility UI writes (harness idiom: SetLibraryVisibility).
_, err = setup.DB.SetLibraryVisibility(ctx, database.SetLibraryVisibilityParams{
UserID: pgtype.UUID{Bytes: [16]byte(regularID), Valid: true},
LibraryID: libH.ID,
IsVisible: false,
})
require.NoError(t, err, "hide libH from regular user")
// OPDS device owned by the REGULAR user (OPDS identity = device owner).
opdsToken := "dev_" + uuid.New().String()
device, err := setup.DB.CreateDevice(ctx, database.CreateDeviceParams{
UserID: pgtype.UUID{Bytes: [16]byte(regularID), Valid: true},
DeviceName: "RLS Invariant OPDS Device",
DeviceType: "koreader",
DeviceIdentifier: "rls-invariant-" + uuid.New().String()[:8],
AuthToken: opdsToken,
SyncEnabled: pgtype.Bool{Bool: true, Valid: true},
AutoSync: pgtype.Bool{Bool: true, Valid: true},
SyncFrequencyMinutes: pgtype.Int4{Int32: 60, Valid: true},
DeviceMetadata: []byte("{}"),
})
require.NoError(t, err, "create OPDS device for regular user")
t.Cleanup(func() { _ = setup.DB.DeleteDevice(ctx, device.ID) })
rlsGet := func(token, path string) (int, string) {
req, _ := http.NewRequest(http.MethodGet, setup.Server.URL+path, nil)
if token != "" {
req.Header.Set("Authorization", "Bearer "+token)
}
resp, err := http.DefaultClient.Do(req)
require.NoError(t, err, "GET %s", path)
defer func() { _ = resp.Body.Close() }()
var sb strings.Builder
buf := make([]byte, 32*1024)
for {
n, err := resp.Body.Read(buf)
if n > 0 {
sb.Write(buf[:n])
}
if err != nil {
break
}
}
return resp.StatusCode, sb.String()
}
// Surfaces that render media TITLES (books appear by name).
titleSurfaces := []struct {
name string
path string
auth string
}{
{"media-items list", "/api/media-items?limit=500", regularToken},
{"dashboard sections", "/api/dashboard/sections?limit=500", regularToken},
{"opds catalog", "/opds/devices/" + device.ID.String() + "/catalog", opdsToken},
}
// Surfaces that return media-adjacent data (counts, series names,
// aggregates) — hidden-subtree leakage would show up as marker
// series names / inventory rows, not book titles.
aggregateSurfaces := []struct {
name string
path string
auth string
}{
{"collections list", "/api/collections", regularToken},
{"series list", "/api/series", regularToken},
{"stats summary", "/api/stats/summary", regularToken},
{"stats library-usage", "/api/stats/library-usage", regularToken},
}
t.Run("restricted_user_hidden_library_absent_everywhere", func(t *testing.T) {
for _, s := range titleSurfaces {
t.Run(s.name, func(t *testing.T) {
code, body := rlsGet(s.auth, s.path)
require.Equal(t, http.StatusOK, code, "surface %s must be authorized (a 401 here is a harness bug, not a pass)", s.path)
// THE INVARIANT: nothing from the hidden subtree —
// neither its books nor the library itself.
assert.NotContains(t, body, hiddenMarker,
"LEAK: hidden library content surfaced on %s", s.path)
// Control: the visible library's book IS present —
// guards against false greens from empty/anonymous
// responses.
if s.name != "opds catalog" { // root catalog may nest books behind library subsections
assert.Contains(t, body, controlMarker,
"control book missing from %s — response is not listing media (false-green guard)", s.path)
}
})
}
for _, s := range aggregateSurfaces {
t.Run(s.name, func(t *testing.T) {
code, body := rlsGet(s.auth, s.path)
require.Equal(t, http.StatusOK, code, "surface %s must be authorized", s.path)
assert.NotContains(t, body, hiddenMarker,
"LEAK: hidden library content surfaced on %s", s.path)
})
}
})
t.Run("restricted_user_dashboard_scoped_to_hidden_library", func(t *testing.T) {
code, body := rlsGet(regularToken, "/api/dashboard/sections?library_id="+uuid.UUID(libH.ID.Bytes).String())
assert.NotContains(t, body, hiddenMarker,
"LEAK: dashboard scoped to the hidden library leaked its content (status %d)", code)
})
t.Run("restricted_user_collection_detail_view_all", func(t *testing.T) {
// The mobile View All path: GET /api/collections/{id} for every
// collection the dashboard references (system sections included).
_, sectionsBody := rlsGet(regularToken, "/api/dashboard/sections?limit=500")
seen := map[string]bool{}
for _, id := range rlsUUIDPattern.FindAllString(sectionsBody, -1) {
if seen[id] {
continue
}
seen[id] = true
code, body := rlsGet(regularToken, "/api/collections/"+id)
if code != http.StatusOK {
continue // not a collection id (or not visible) — absence trivially holds
}
assert.NotContains(t, body, hiddenMarker,
"LEAK: collection detail %s (View All surface) returned hidden-library content", id)
}
})
t.Run("restricted_user_explicit_hidden_library_scoped_requests_rejected", func(t *testing.T) {
// Pinned contract (AGENTS.md family-lens rule): naming a hidden
// library explicitly is a 403, never a silent pass.
libID := uuid.UUID(libH.ID.Bytes).String()
for _, path := range []string{
"/api/media-items?library_id=" + libID,
"/api/series?library_id=" + libID,
"/api/series/books?library_id=" + libID + "&name=RLS",
} {
code, body := rlsGet(regularToken, path)
assert.Equal(t, http.StatusForbidden, code,
"scoped request %s must be 403 for a hidden library (got %d)", path, code)
assert.NotContains(t, body, hiddenMarker)
}
})
t.Run("admin_still_sees_hidden_library_user_scoped_not_global", func(t *testing.T) {
// The hide is PER-USER: an admin (no hidden rows) must still see
// everything. This catches "fixing" the leak by hiding the
// library globally.
for _, s := range []struct{ name, path string }{
{"media-items list", "/api/media-items?limit=500"},
{"dashboard sections", "/api/dashboard/sections?limit=500"},
} {
t.Run(s.name, func(t *testing.T) {
code, body := rlsGet(adminToken, s.path)
require.Equal(t, http.StatusOK, code)
assert.Contains(t, body, hiddenMarker,
"admin must still see the hidden library on %s (hide is user-scoped)", s.path)
})
}
t.Run("opds catalog", func(t *testing.T) {
// OPDS identity = device owner; an ADMIN-owned device sees all.
adminDevToken := "dev_" + uuid.New().String()
adminID := getTestUserID(t, setup.DB)
adminDevice, derr := setup.DB.CreateDevice(ctx, database.CreateDeviceParams{
UserID: pgtype.UUID{Bytes: [16]byte(adminID), Valid: true},
DeviceName: "RLS Invariant Admin OPDS Device",
DeviceType: "koreader",
DeviceIdentifier: "rls-invariant-admin-" + uuid.New().String()[:8],
AuthToken: adminDevToken,
SyncEnabled: pgtype.Bool{Bool: true, Valid: true},
AutoSync: pgtype.Bool{Bool: true, Valid: true},
SyncFrequencyMinutes: pgtype.Int4{Int32: 60, Valid: true},
DeviceMetadata: []byte("{}"),
})
require.NoError(t, derr, "create OPDS device for admin")
t.Cleanup(func() { _ = setup.DB.DeleteDevice(ctx, adminDevice.ID) })
code, body := rlsGet(adminDevToken, "/opds/devices/"+adminDevice.ID.String()+"/catalog")
require.Equal(t, http.StatusOK, code)
assert.Contains(t, body, hiddenMarker,
"admin's OPDS catalog must still expose the hidden library (user-scoped hide)")
})
})
}