| 1 | //go:build linux && rootrunner |
| 2 | |
| 3 | package host |
| 4 | |
| 5 | import ( |
| 6 | "encoding/json" |
| 7 | "os" |
| 8 | "os/exec" |
| 9 | "path/filepath" |
| 10 | "reflect" |
| 11 | "testing" |
| 12 | |
| 13 | "github.com/carlosframework/platform/internal/hostbox" |
| 14 | "github.com/carlosframework/platform/internal/hostguard" |
| 15 | "github.com/carlosframework/platform/internal/provision" |
| 16 | "github.com/carlosframework/platform/internal/rootstate" |
| 17 | "golang.org/x/sys/unix" |
| 18 | ) |
| 19 | |
| 20 | func TestPlan14GenerationPayloadPhysicalRootRunner(t *testing.T) { |
| 21 | const childKey = "PLAN14_E28_PAYLOAD_CHILD" |
| 22 | dir := os.Getenv(childKey) |
| 23 | if dir == "" { |
| 24 | dir = generationRootRunnerDir(t) |
| 25 | cmd := exec.CommandContext(t.Context(), "unshare", "--mount", "--pid", "--fork", "--mount-proc", os.Args[0], "-test.run=^TestPlan14GenerationPayloadPhysicalRootRunner$", "-test.v", "-test.timeout=2m") |
| 26 | cmd.Dir = dir |
| 27 | cmd.Env = append(os.Environ(), childKey+"="+dir) |
| 28 | if out, err := cmd.CombinedOutput(); err != nil { |
| 29 | t.Fatalf("isolated payload census: %v\n%s", err, out) |
| 30 | } else { |
| 31 | t.Logf("%s", out) |
| 32 | } |
| 33 | return |
| 34 | } |
| 35 | if os.Geteuid() != 0 { |
| 36 | t.Fatal("designated runner must execute as root") |
| 37 | } |
| 38 | t.Setenv("CARLOS_OPT_DIR", dir) |
| 39 | t.Setenv("CARLOS_DATA_DIR", filepath.Join(dir, "data")) |
| 40 | for _, path := range []string{filepath.Join(dir, "versions"), dataDir()} { |
| 41 | if err := os.Mkdir(path, 0755); err != nil { |
| 42 | t.Fatal(err) |
| 43 | } |
| 44 | } |
| 45 | pins, certificate := generationNamespacePinFixture(t, dir) |
| 46 | path := filepath.Join(dataDir(), "retained") |
| 47 | if err := os.WriteFile(path, []byte("predecessor payload"), 0600); err != nil { |
| 48 | t.Fatal(err) |
| 49 | } |
| 50 | var st unix.Stat_t |
| 51 | if err := unix.Stat(path, &st); err != nil { |
| 52 | t.Fatal(err) |
| 53 | } |
| 54 | // An empty current installation still carries its predecessor's payload. |
| 55 | // These are root-written fixtures, not migration or rebind authorization. |
| 56 | in := hostguard.RootInstallation{Host: "retained.example", Incarnation: "inc", Stamp: 5, Account: "bab", App: "shop", Box: "runner", Enrollment: "en", Migration: 1, InventoryRevision: 1, Empty: true} |
| 57 | in.Record = provision.RecordKey(in.Account, in.App, in.Host) |
| 58 | fences, err := rootstate.Open(filepath.Join(dir, "fences"), false, false) |
| 59 | if err != nil { |
| 60 | t.Fatal(err) |
| 61 | } |
| 62 | raw, err := json.Marshal(map[string]any{ |
| 63 | "Schema": 1, "Installation": in, "Retired": []hostguard.Captured{{Incarnation: in.Incarnation, Stamp: 2}}, |
| 64 | "State": map[string]any{"v": 1, "host": in.Host, "incarnation": in.Incarnation, "active_stamp": 5, "retired_stamps": []uint64{2}}, |
| 65 | }) |
| 66 | if err == nil { |
| 67 | err = fences.Write(in.Host+".json", raw) |
| 68 | } |
| 69 | fences.Close() |
| 70 | if err != nil { |
| 71 | t.Fatal(err) |
| 72 | } |
| 73 | journalPath := filepath.Join(dir, "journals.db") |
| 74 | journal, err := hostbox.OpenLaunchJournal(journalPath) |
| 75 | if err != nil { |
| 76 | t.Fatal(err) |
| 77 | } |
| 78 | service, err := hostbox.NewJournalService(journal) |
| 79 | if err != nil { |
| 80 | journal.Close() |
| 81 | t.Fatal(err) |
| 82 | } |
| 83 | for _, stamp := range []uint64{2, 5} { |
| 84 | payload := hostbox.StopInventory{Complete: true, Host: in.Host, Incarnation: in.Incarnation, InstallationStamp: stamp, Box: in.Box, Enrollment: in.Enrollment, DirectoryRevision: "1"} |
| 85 | if stamp == 2 { |
| 86 | payload.Entries = []hostbox.StopInventoryEntry{{Identity: inventoryIdentityFixture(t, dataDir(), "retained"), Kind: "path", ArtifactID: "retained", ManagedRoot: "data", RelativePath: "retained", Ownership: "owner", Materialization: "materialized", Device: uint64(st.Dev), Inode: st.Ino, Type: unix.S_IFREG}} |
| 87 | } |
| 88 | if err := service.Inventory.WriteStopInventory(t.Context(), payload); err != nil { |
| 89 | journal.Close() |
| 90 | t.Fatal(err) |
| 91 | } |
| 92 | } |
| 93 | journal.Close() |
| 94 | read := func() generationInventory { |
| 95 | t.Helper() |
| 96 | v, err := generationInventoryAt(t.Context(), filepath.Join(dir, "census"), filepath.Join(dir, "fences"), journalPath) |
| 97 | if err != nil { |
| 98 | t.Fatal(err) |
| 99 | } |
| 100 | return v |
| 101 | } |
| 102 | before := read() |
| 103 | accept := func() { |
| 104 | t.Helper() |
| 105 | if got, err := pins.StagedPins(t.Context(), dir); err != nil || len(got) != 0 || !certificate().Complete { |
| 106 | t.Fatalf("exact retained payload: %v %v", got, err) |
| 107 | } |
| 108 | } |
| 109 | accept() |
| 110 | for _, attack := range []string{"missing", "replacement", "symlink", "bind"} { |
| 111 | t.Run(attack, func(t *testing.T) { |
| 112 | initial := certificate() |
| 113 | if attack == "bind" { |
| 114 | other := filepath.Join(dataDir(), "other") |
| 115 | if err := os.WriteFile(other, []byte("different inode"), 0600); err != nil { |
| 116 | t.Fatal(err) |
| 117 | } |
| 118 | if err := unix.Mount(other, path, "", unix.MS_BIND, ""); err != nil { |
| 119 | t.Fatal(err) |
| 120 | } |
| 121 | t.Cleanup(func() { |
| 122 | if err := unix.Unmount(path, 0); err != nil { |
| 123 | t.Error(err) |
| 124 | } |
| 125 | }) |
| 126 | } else { |
| 127 | if err := os.Rename(path, path+".old"); err != nil { |
| 128 | t.Fatal(err) |
| 129 | } |
| 130 | t.Cleanup(func() { |
| 131 | if attack != "missing" { |
| 132 | if err := os.Remove(path); err != nil { |
| 133 | t.Error(err) |
| 134 | } |
| 135 | } |
| 136 | if err := os.Rename(path+".old", path); err != nil { |
| 137 | t.Error(err) |
| 138 | } |
| 139 | }) |
| 140 | if attack == "replacement" { |
| 141 | err = os.WriteFile(path, []byte("replacement"), 0600) |
| 142 | } else if attack == "symlink" { |
| 143 | err = os.Symlink(path+".old", path) |
| 144 | } |
| 145 | if err != nil { |
| 146 | t.Fatal(err) |
| 147 | } |
| 148 | } |
| 149 | if got, err := pins.StagedPins(t.Context(), dir); err == nil || got != nil { |
| 150 | t.Fatalf("changed predecessor payload certified: %v %v", got, err) |
| 151 | } |
| 152 | if c := certificate(); c.Complete || c.Revision <= initial.Revision { |
| 153 | t.Fatal("stale completeness survived physical refusal") |
| 154 | } |
| 155 | if !reflect.DeepEqual(before, read()) { |
| 156 | t.Fatal("physical refusal changed retained authority") |
| 157 | } |
| 158 | }) |
| 159 | denied := certificate() |
| 160 | accept() |
| 161 | if certificate().Revision <= denied.Revision { |
| 162 | t.Fatal("restored payload reused an old certificate") |
| 163 | } |
| 164 | } |
| 165 | for _, kind := range []string{"route", "timer"} { |
| 166 | t.Run("unfinished-"+kind, func(t *testing.T) { |
| 167 | journal, err := hostbox.OpenLaunchJournal(journalPath) |
| 168 | if err != nil { |
| 169 | t.Fatal(err) |
| 170 | } |
| 171 | defer journal.Close() |
| 172 | service, err := hostbox.NewJournalService(journal) |
| 173 | if err != nil { |
| 174 | t.Fatal(err) |
| 175 | } |
| 176 | payload := before.Payloads[0].Inventory |
| 177 | if payload.InstallationStamp != 2 { |
| 178 | t.Fatal("expected retained predecessor") |
| 179 | } |
| 180 | entry := hostbox.StopInventoryEntry{Kind: kind, ArtifactID: "registry-payload", ManagedRoot: "registry", RelativePath: in.Host, RowIdentity: "row", Ownership: "owner", Materialization: "materialized"} |
| 181 | if kind == "timer" { |
| 182 | entry.RelativePath += "/backup" |
| 183 | } |
| 184 | payload.Entries = append(append([]hostbox.StopInventoryEntry(nil), payload.Entries...), entry) |
| 185 | write := func() { |
| 186 | t.Helper() |
| 187 | if err := service.Inventory.WriteStopInventory(t.Context(), payload); err != nil { |
| 188 | t.Fatal(err) |
| 189 | } |
| 190 | } |
| 191 | write() |
| 192 | accept() |
| 193 | initial := certificate() |
| 194 | payload.Entries[len(payload.Entries)-1].Materialization = "intended" |
| 195 | write() |
| 196 | pending := read() |
| 197 | if got, err := pins.StagedPins(t.Context(), dir); err == nil || got != nil { |
| 198 | t.Fatalf("unfinished predecessor %s certified: %v %v", kind, got, err) |
| 199 | } |
| 200 | if c := certificate(); c.Complete || c.Revision <= initial.Revision { |
| 201 | t.Fatal("unfinished registry payload retained certificate") |
| 202 | } |
| 203 | if !reflect.DeepEqual(pending, read()) { |
| 204 | t.Fatal("refusal changed the inventory") |
| 205 | } |
| 206 | payload.Entries[len(payload.Entries)-1].Materialization = "materialized" |
| 207 | write() |
| 208 | accept() |
| 209 | payload.Entries = payload.Entries[:len(payload.Entries)-1] |
| 210 | write() |
| 211 | }) |
| 212 | } |
| 213 | } |
| 214 | |
amadan