| 1 | //go:build linux && rootrunner |
| 2 | |
| 3 | package release |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "os" |
| 8 | "path/filepath" |
| 9 | "testing" |
| 10 | |
| 11 | "github.com/carlosframework/platform/internal/rootstate" |
| 12 | ) |
| 13 | |
| 14 | func TestPlan14GenerationCompletenessCheckedRootStore(t *testing.T) { |
| 15 | if os.Geteuid() != 0 { |
| 16 | t.Fatal("designated runner must execute as root") |
| 17 | } |
| 18 | dir, err := os.MkdirTemp("/var/lib", "plan14-generation-certificate-") |
| 19 | if err != nil { |
| 20 | t.Fatal(err) |
| 21 | } |
| 22 | t.Cleanup(func() { |
| 23 | if err := os.RemoveAll(dir); err != nil { |
| 24 | t.Error(err) |
| 25 | } |
| 26 | }) |
| 27 | state := filepath.Join(dir, "state") |
| 28 | disk, err := rootstate.Open(state, true, false) |
| 29 | if err != nil { |
| 30 | t.Fatal(err) |
| 31 | } |
| 32 | defer disk.Close() |
| 33 | g := &RootGenerations{Store: disk} |
| 34 | _, _, b := generationFixture(t) |
| 35 | if _, err := g.Reserve(b); err != nil { |
| 36 | t.Fatal(err) |
| 37 | } |
| 38 | records, err := g.Reservations(t.Context()) |
| 39 | if err != nil { |
| 40 | t.Fatal(err) |
| 41 | } |
| 42 | verify := func(context.Context, []GenerationReservation) (GenerationEvidence, error) { |
| 43 | return generationEvidence(), nil |
| 44 | } |
| 45 | if _, err := g.Certify(t.Context(), records, verify); err != nil { |
| 46 | t.Fatal(err) |
| 47 | } |
| 48 | file := filepath.Join(state, generationCompletenessKey) |
| 49 | for _, mode := range []os.FileMode{0666, 0620} { |
| 50 | if err := os.Chmod(file, mode); err != nil { |
| 51 | t.Fatal(err) |
| 52 | } |
| 53 | if _, err := g.Completeness(); err == nil { |
| 54 | t.Fatal("accepted writable certificate") |
| 55 | } |
| 56 | if err := os.Chmod(file, 0600); err != nil { |
| 57 | t.Fatal(err) |
| 58 | } |
| 59 | } |
| 60 | if err := os.Chown(file, 65534, 65534); err != nil { |
| 61 | t.Fatal(err) |
| 62 | } |
| 63 | if _, err := g.Completeness(); err == nil { |
| 64 | t.Fatal("accepted service-owned certificate") |
| 65 | } |
| 66 | if err := os.Chown(file, 0, 0); err != nil { |
| 67 | t.Fatal(err) |
| 68 | } |
| 69 | saved := filepath.Join(state, "saved") |
| 70 | if err := os.Rename(file, saved); err != nil { |
| 71 | t.Fatal(err) |
| 72 | } |
| 73 | if err := os.Symlink(saved, file); err != nil { |
| 74 | t.Fatal(err) |
| 75 | } |
| 76 | if _, err := g.Completeness(); err == nil { |
| 77 | t.Fatal("accepted symlink certificate") |
| 78 | } |
| 79 | if err := os.Remove(file); err != nil { |
| 80 | t.Fatal(err) |
| 81 | } |
| 82 | if err := os.Rename(saved, file); err != nil { |
| 83 | t.Fatal(err) |
| 84 | } |
| 85 | if _, err := g.Certify(t.Context(), records, verify); err != nil { |
| 86 | t.Fatal(err) |
| 87 | } |
| 88 | if err := os.Rename(state, state+".retained"); err != nil { |
| 89 | t.Fatal(err) |
| 90 | } |
| 91 | if err := os.Mkdir(state, 0700); err != nil { |
| 92 | t.Fatal(err) |
| 93 | } |
| 94 | if _, err := g.Completeness(); err != nil { |
| 95 | t.Fatal("retained descriptor lost its checked store", err) |
| 96 | } |
| 97 | if _, err := os.Stat(filepath.Join(state, generationCompletenessKey)); !os.IsNotExist(err) { |
| 98 | t.Fatal("retained descriptor wrote to replacement directory", err) |
| 99 | } |
| 100 | replacement, err := rootstate.Open(state, false, false) |
| 101 | if err != nil { |
| 102 | t.Fatal(err) |
| 103 | } |
| 104 | defer replacement.Close() |
| 105 | if _, err := (&RootGenerations{Store: replacement}).Completeness(); !os.IsNotExist(err) { |
| 106 | t.Fatal("replacement directory inherited completeness", err) |
| 107 | } |
| 108 | if err := os.Chmod(state+".retained", 0777); err != nil { |
| 109 | t.Fatal(err) |
| 110 | } |
| 111 | if _, err := g.Completeness(); err == nil { |
| 112 | t.Fatal("accepted writable store directory") |
| 113 | } |
| 114 | } |
| 115 | |
amadan