| 1 | //go:build linux |
| 2 | |
| 3 | package hostexec |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "crypto/ed25519" |
| 8 | "encoding/base64" |
| 9 | "encoding/json" |
| 10 | "errors" |
| 11 | "github.com/carlosframework/platform/internal/release" |
| 12 | "github.com/carlosframework/platform/internal/version" |
| 13 | "os" |
| 14 | "path/filepath" |
| 15 | "runtime" |
| 16 | "sync/atomic" |
| 17 | "testing" |
| 18 | |
| 19 | "github.com/carlosframework/platform/internal/hostfloor" |
| 20 | ) |
| 21 | |
| 22 | func TestPendingRevalidatesRunningImageAfterCompletedUpdate(t *testing.T) { |
| 23 | cfg, _, _, store, _ := fixture(t) |
| 24 | cfg.UpdateGuardDir = t.TempDir() |
| 25 | cfg.UpdateJournal = filepath.Join(t.TempDir(), "journal.json") |
| 26 | var oldImage atomic.Bool |
| 27 | oldImage.Store(true) |
| 28 | var checked atomic.Int32 |
| 29 | cfg.verifyRunning = func(context.Context) error { |
| 30 | checked.Add(1) |
| 31 | if oldImage.Load() { |
| 32 | return hostfloor.ErrFloor |
| 33 | } |
| 34 | return nil |
| 35 | } |
| 36 | // Suspend precisely after pending persistence. Root finished its update by |
| 37 | // the time the controller resumes, so marker-only checking would acknowledge. |
| 38 | cfg.writeLocal = func(d *localDir, s State) error { |
| 39 | if err := d.write(s); err != nil { |
| 40 | return err |
| 41 | } |
| 42 | marker := filepath.Join(cfg.UpdateGuardDir, "update-begun.json") |
| 43 | if err := hostfloor.Durable(marker, []byte(`{"id":"update"}`), 0644); err != nil { |
| 44 | return err |
| 45 | } |
| 46 | if err := hostfloor.Durable(filepath.Join(cfg.UpdateGuardDir, "completed.json"), []byte("update"), 0644); err != nil { |
| 47 | return err |
| 48 | } |
| 49 | return hostfloor.RemoveDurable(marker) |
| 50 | } |
| 51 | c, err := Open(t.Context(), cfg) |
| 52 | if c != nil || !errors.Is(err, hostfloor.ErrFloor) { |
| 53 | t.Fatal("old executing image acknowledged", err) |
| 54 | } |
| 55 | if checked.Load() == 0 { |
| 56 | t.Fatal("running-image verifier skipped") |
| 57 | } |
| 58 | store.mu.Lock() |
| 59 | calls := store.calls |
| 60 | store.mu.Unlock() |
| 61 | if calls != 0 { |
| 62 | t.Fatal("acknowledged before identity check", calls) |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | func TestUpdateIdentityRecheckedBeforeLeaseAcknowledgement(t *testing.T) { |
| 67 | cfg, _, _, store, _ := fixture(t) |
| 68 | cfg.UpdateGuardDir = t.TempDir() |
| 69 | cfg.UpdateJournal = filepath.Join(t.TempDir(), "journal.json") |
| 70 | var checked atomic.Int32 |
| 71 | cfg.verifyRunning = func(context.Context) error { |
| 72 | if checked.Add(1) > 1 { |
| 73 | return hostfloor.ErrFloor |
| 74 | } |
| 75 | return nil |
| 76 | } |
| 77 | c, err := Open(t.Context(), cfg) |
| 78 | if c != nil || !errors.Is(err, hostfloor.ErrFloor) { |
| 79 | t.Fatal("identity change during cleanup accepted", err) |
| 80 | } |
| 81 | store.mu.Lock() |
| 82 | calls := store.calls |
| 83 | store.mu.Unlock() |
| 84 | if calls != 0 { |
| 85 | t.Fatal("lease written", calls) |
| 86 | } |
| 87 | } |
| 88 | func TestUpdateMarkerBlocksBeforeIdentityCheck(t *testing.T) { |
| 89 | cfg, _, _, _, _ := fixture(t) |
| 90 | cfg.UpdateGuardDir = t.TempDir() |
| 91 | cfg.UpdateJournal = filepath.Join(t.TempDir(), "journal.json") |
| 92 | cfg.verifyRunning = func(context.Context) error { t.Fatal("verification ran despite update"); return nil } |
| 93 | for _, path := range []string{filepath.Join(cfg.UpdateGuardDir, "update-begun.json"), cfg.UpdateJournal} { |
| 94 | if err := os.WriteFile(path, []byte("present"), 0644); err != nil { |
| 95 | t.Fatal(err) |
| 96 | } |
| 97 | if err := cfg.checkUpdateIdentity(t.Context()); err == nil { |
| 98 | t.Fatal("update accepted") |
| 99 | } |
| 100 | if err := os.Remove(path); err != nil { |
| 101 | t.Fatal(err) |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | func TestRunningIdentityUsesExecutingImageAndCurrentFloor(t *testing.T) { |
| 107 | oldBuild := version.Build |
| 108 | version.Build = "v1.2.3" |
| 109 | t.Cleanup(func() { version.Build = oldBuild }) |
| 110 | pub, priv, err := ed25519.GenerateKey(nil) |
| 111 | if err != nil { |
| 112 | t.Fatal(err) |
| 113 | } |
| 114 | t.Setenv("CARLOS_RELEASE_PUBKEY", base64.StdEncoding.EncodeToString(pub)) |
| 115 | t.Setenv("CARLOS_DEPLOYMENT_BUCKET", "bucket") |
| 116 | cfg := Config{UpdateGuardDir: t.TempDir(), UpdateJournal: filepath.Join(t.TempDir(), "journal.json"), Store: release.NewDirStore(t.TempDir())} |
| 117 | sg := release.RootSigner(priv) |
| 118 | if err := os.Mkdir(filepath.Join(cfg.UpdateGuardDir, "identities"), 0755); err != nil { |
| 119 | t.Fatal(err) |
| 120 | } |
| 121 | if err := os.WriteFile(filepath.Join(cfg.UpdateGuardDir, "carlos"), []byte("persistent checker"), 0755); err != nil { |
| 122 | t.Fatal(err) |
| 123 | } |
| 124 | writeFloor := func(min string) { |
| 125 | floor, _ := json.Marshal(hostfloor.Floor{Min: 1, MinRelease: min}) |
| 126 | auth, err := release.SignRootEnvelope(sg, hostfloor.Authorization{Schema: 1, Purpose: "moves-protocol", DeploymentBucket: "bucket", Key: hostfloor.Key, SHA256: hostfloor.Digest(floor)}) |
| 127 | if err != nil { |
| 128 | t.Fatal(err) |
| 129 | } |
| 130 | policy, _ := json.Marshal(hostfloor.Policy{Schema: 1, DeploymentBucket: "bucket", Mode: "armed", Floor: floor, Authorization: auth}) |
| 131 | if err := hostfloor.Durable(filepath.Join(cfg.UpdateGuardDir, "policy.json"), policy, 0644); err != nil { |
| 132 | t.Fatal(err) |
| 133 | } |
| 134 | for key, wire := range map[string][]byte{hostfloor.Key: floor, hostfloor.AuthKey: auth} { |
| 135 | _, etag, _ := cfg.Store.Get(t.Context(), key) |
| 136 | if _, err := cfg.Store.Put(t.Context(), key, wire, etag); err != nil { |
| 137 | t.Fatal(err) |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | writeIdentity := func(hash string) { |
| 142 | platform := runtime.GOOS + "-" + runtime.GOARCH |
| 143 | rel := release.SystemRelease{Version: version.Build, ReleaseTag: "v1.2.3", MovesProtocol: 1, Artifacts: map[string]release.SystemArtifact{platform: {Key: release.SystemArtifactKey(version.Build, platform), SHA256: hash}}} |
| 144 | store := release.NewDirStore(t.TempDir()) |
| 145 | if _, err := release.PromoteSystem(t.Context(), store, sg, "router", "stable", rel, release.SystemPromoteOptions{}); err != nil { |
| 146 | t.Fatal(err) |
| 147 | } |
| 148 | wire, _, err := store.Get(t.Context(), release.SystemPointerKey("router", "stable")) |
| 149 | if err != nil { |
| 150 | t.Fatal(err) |
| 151 | } |
| 152 | if err := hostfloor.Durable(filepath.Join(cfg.UpdateGuardDir, "identities", "v1.2.3.json"), wire, 0644); err != nil { |
| 153 | t.Fatal(err) |
| 154 | } |
| 155 | } |
| 156 | writeFloor("v1.2.3") |
| 157 | hash, err := hostfloor.ExecutingHash() |
| 158 | if err != nil { |
| 159 | t.Fatal(err) |
| 160 | } |
| 161 | writeIdentity(hash) |
| 162 | if err := cfg.checkUpdateIdentity(t.Context()); err != nil { |
| 163 | t.Fatal("valid running image refused", err) |
| 164 | } |
| 165 | writeIdentity(hostfloor.Digest([]byte("replacement at current binary path"))) |
| 166 | if err := cfg.checkUpdateIdentity(t.Context()); err == nil { |
| 167 | t.Fatal("replacement identity authorized stale executing inode") |
| 168 | } |
| 169 | writeIdentity(hash) |
| 170 | writeFloor("v1.2.4") |
| 171 | if err := cfg.checkUpdateIdentity(t.Context()); err == nil { |
| 172 | t.Fatal("resumed image below current floor authorized") |
| 173 | } |
| 174 | } |
| 175 | |
amadan