| 1 | //go:build linux && rootrunner |
| 2 | |
| 3 | package host |
| 4 | |
| 5 | import ( |
| 6 | "encoding/json" |
| 7 | "os" |
| 8 | "path/filepath" |
| 9 | "testing" |
| 10 | |
| 11 | "github.com/carlosframework/platform/internal/hostbox" |
| 12 | "github.com/carlosframework/platform/internal/rootparticipation" |
| 13 | "github.com/carlosframework/platform/internal/rootstate" |
| 14 | ) |
| 15 | |
| 16 | func TestPlan14GenerationInventoryCheckedRootReader(t *testing.T) { |
| 17 | dir := generationRootRunnerDir(t) |
| 18 | censusPath, fencesPath, journalPath := filepath.Join(dir, "census"), filepath.Join(dir, "fences"), filepath.Join(dir, "journals.db") |
| 19 | census, err := rootstate.Open(censusPath, true, false) |
| 20 | if err != nil { |
| 21 | t.Fatal(err) |
| 22 | } |
| 23 | defer census.Close() |
| 24 | fences, err := rootstate.Open(fencesPath, true, false) |
| 25 | if err != nil { |
| 26 | t.Fatal(err) |
| 27 | } |
| 28 | fences.Close() |
| 29 | c := rootparticipation.Census{Schema: 1, Box: "runner", Enrollment: "runner-en", Migration: 1, Revision: 1, LaunchRevision: 1, Complete: true} |
| 30 | raw, err := json.Marshal(c) |
| 31 | if err != nil { |
| 32 | t.Fatal(err) |
| 33 | } |
| 34 | if err := census.Write("census.json", raw); err != nil { |
| 35 | t.Fatal(err) |
| 36 | } |
| 37 | journal, err := hostbox.OpenLaunchJournal(journalPath) |
| 38 | if err != nil { |
| 39 | t.Fatal(err) |
| 40 | } |
| 41 | service, err := hostbox.NewJournalService(journal) |
| 42 | if err != nil { |
| 43 | t.Fatal(err) |
| 44 | } |
| 45 | in := hostbox.StopInventory{Complete: true, Host: "retained.example", Incarnation: "inc", InstallationStamp: 2, Box: c.Box, Enrollment: c.Enrollment, DirectoryRevision: "1"} |
| 46 | if err := service.Inventory.WriteStopInventory(t.Context(), in); err != nil { |
| 47 | t.Fatal(err) |
| 48 | } |
| 49 | journal.Close() |
| 50 | got, err := generationInventoryAt(t.Context(), censusPath, fencesPath, journalPath) |
| 51 | if err != nil || got.Census != c || len(got.Installations) != 0 || len(got.Launches) != 0 || len(got.Payloads) != 1 || got.Payloads[0].Revision != 1 || got.Payloads[0].Inventory.Host != in.Host { |
| 52 | t.Fatalf("checked snapshot: %+v %v", got, err) |
| 53 | } |
| 54 | // An independently discovered payload without its installation cannot be |
| 55 | // certified, even though the payload itself has Complete set. |
| 56 | if err := generationPayloadBindings(got.Payloads, nil); err == nil { |
| 57 | t.Fatal("orphan payload granted completeness") |
| 58 | } |
| 59 | for _, attack := range []string{"writable-db", "service-db", "symlink-db", "writable-wal", "service-wal", "missing-db", "missing-census"} { |
| 60 | t.Run(attack, func(t *testing.T) { |
| 61 | switch attack { |
| 62 | case "writable-db": |
| 63 | if err := os.Chmod(journalPath, 0666); err != nil { |
| 64 | t.Fatal(err) |
| 65 | } |
| 66 | defer os.Chmod(journalPath, 0600) |
| 67 | case "service-db": |
| 68 | if err := os.Chown(journalPath, 65534, 65534); err != nil { |
| 69 | t.Fatal(err) |
| 70 | } |
| 71 | defer os.Chown(journalPath, 0, 0) |
| 72 | case "symlink-db": |
| 73 | if err := os.Rename(journalPath, journalPath+".saved"); err != nil { |
| 74 | t.Fatal(err) |
| 75 | } |
| 76 | defer func() { os.Remove(journalPath); os.Rename(journalPath+".saved", journalPath) }() |
| 77 | if err := os.Symlink(journalPath+".saved", journalPath); err != nil { |
| 78 | t.Fatal(err) |
| 79 | } |
| 80 | case "writable-wal", "service-wal": |
| 81 | wal := journalPath + "-wal" |
| 82 | if err := os.WriteFile(wal, []byte("hostile"), 0600); err != nil { |
| 83 | t.Fatal(err) |
| 84 | } |
| 85 | defer os.Remove(wal) |
| 86 | if attack == "writable-wal" { |
| 87 | if err := os.Chmod(wal, 0666); err != nil { |
| 88 | t.Fatal(err) |
| 89 | } |
| 90 | } else { |
| 91 | if err := os.Chown(wal, 65534, 65534); err != nil { |
| 92 | t.Fatal(err) |
| 93 | } |
| 94 | } |
| 95 | case "missing-db": |
| 96 | if err := os.Rename(journalPath, journalPath+".saved"); err != nil { |
| 97 | t.Fatal(err) |
| 98 | } |
| 99 | defer os.Rename(journalPath+".saved", journalPath) |
| 100 | case "missing-census": |
| 101 | if err := census.Remove("census.json"); err != nil { |
| 102 | t.Fatal(err) |
| 103 | } |
| 104 | defer census.Write("census.json", raw) |
| 105 | } |
| 106 | if _, err := generationInventoryAt(t.Context(), censusPath, fencesPath, journalPath); err == nil { |
| 107 | t.Fatal("hostile source accepted") |
| 108 | } |
| 109 | }) |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | func generationRootRunnerDir(t *testing.T) string { |
| 114 | t.Helper() |
| 115 | if os.Geteuid() != 0 { |
| 116 | t.Fatal("designated runner must execute as root") |
| 117 | } |
| 118 | dir, err := os.MkdirTemp("/var/lib", "plan14-generation-") |
| 119 | if err != nil { |
| 120 | t.Fatal(err) |
| 121 | } |
| 122 | t.Cleanup(func() { |
| 123 | if err := os.RemoveAll(dir); err != nil { |
| 124 | t.Error(err) |
| 125 | } |
| 126 | }) |
| 127 | if err := os.Chmod(dir, 0755); err != nil { |
| 128 | t.Fatal(err) |
| 129 | } |
| 130 | check, err := rootstate.Open(dir, false, true) |
| 131 | if err != nil { |
| 132 | t.Fatal(err) |
| 133 | } |
| 134 | check.Close() |
| 135 | return dir |
| 136 | } |
| 137 | |
amadan