| 1 | package hostfloor |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "crypto/ed25519" |
| 6 | "crypto/rand" |
| 7 | "encoding/json" |
| 8 | "testing" |
| 9 | |
| 10 | "github.com/carlosframework/platform/internal/release" |
| 11 | ) |
| 12 | |
| 13 | // The armed policy signed offline (claims run sign-policy) carries exactly |
| 14 | // the floor bytes and authorization that Publish later writes for the same |
| 15 | // floor. A box armed with it reports that floor's digest, and guard-exec |
| 16 | // compares its local policy with the published pair, so any difference |
| 17 | // would refuse every guarded launch once the floor is published. |
| 18 | func TestArmedPolicyIsThePublishedAuthorization(t *testing.T) { |
| 19 | pub, key, _ := ed25519.GenerateKey(rand.Reader) |
| 20 | sg := release.RootSigner(key) |
| 21 | floor := Floor{Min: 1, MinRelease: "v0.28.2"} |
| 22 | p, err := ArmedPolicy(sg, "bucket", floor) |
| 23 | if err != nil { |
| 24 | t.Fatal(err) |
| 25 | } |
| 26 | if p.Schema != 1 || p.DeploymentBucket != "bucket" || p.Mode != "armed" { |
| 27 | t.Fatalf("policy header %+v", p) |
| 28 | } |
| 29 | verified, err := p.Verify(pub, "bucket") |
| 30 | if err != nil || verified.Floor != floor { |
| 31 | t.Fatal("armed policy does not verify", verified, err) |
| 32 | } |
| 33 | if _, err = p.Verify(pub, "other"); err == nil { |
| 34 | t.Fatal("armed policy verified for another deployment") |
| 35 | } |
| 36 | // The policy survives the file round trip guard-arm makes. |
| 37 | wire, err := json.Marshal(p) |
| 38 | if err != nil { |
| 39 | t.Fatal(err) |
| 40 | } |
| 41 | var read Policy |
| 42 | if err = json.Unmarshal(wire, &read); err != nil { |
| 43 | t.Fatal(err) |
| 44 | } |
| 45 | if _, err = read.Verify(pub, "bucket"); err != nil || !bytes.Equal(read.Floor, p.Floor) || !bytes.Equal(read.Authorization, p.Authorization) { |
| 46 | t.Fatal("policy file round trip changed the signed bytes", err) |
| 47 | } |
| 48 | |
| 49 | s := release.NewDirStore(t.TempDir()) |
| 50 | if err = Publish(t.Context(), s, sg, "bucket", floor); err != nil { |
| 51 | t.Fatal(err) |
| 52 | } |
| 53 | raw, _, err := s.Get(t.Context(), Key) |
| 54 | if err != nil { |
| 55 | t.Fatal(err) |
| 56 | } |
| 57 | auth, _, err := s.Get(t.Context(), AuthKey) |
| 58 | if err != nil { |
| 59 | t.Fatal(err) |
| 60 | } |
| 61 | if !bytes.Equal(raw, p.Floor) || !bytes.Equal(auth, p.Authorization) { |
| 62 | t.Fatalf("published pair differs from the armed policy:\nfloor %s\npolicy %s\nauth %s\npolicy %s", raw, p.Floor, auth, p.Authorization) |
| 63 | } |
| 64 | published, err := Read(t.Context(), s, pub, "bucket") |
| 65 | if err != nil || published.Digest != verified.Digest { |
| 66 | t.Fatal("published digest differs", published, verified, err) |
| 67 | } |
| 68 | // Signing again is the same bytes: ed25519 is deterministic and the |
| 69 | // floor marshals one way. |
| 70 | again, err := ArmedPolicy(sg, "bucket", floor) |
| 71 | if err != nil || !bytes.Equal(again.Floor, p.Floor) || !bytes.Equal(again.Authorization, p.Authorization) { |
| 72 | t.Fatal("second signature differs", err) |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | func TestArmedPolicyRefusesAnInvalidFloor(t *testing.T) { |
| 77 | _, key, _ := ed25519.GenerateKey(rand.Reader) |
| 78 | sg := release.RootSigner(key) |
| 79 | for name, tc := range map[string]struct { |
| 80 | bucket string |
| 81 | floor Floor |
| 82 | }{ |
| 83 | "no bucket": {"", Floor{Min: 1, MinRelease: "v1.0.0"}}, |
| 84 | "protocol zero": {"bucket", Floor{Min: 0, MinRelease: "v1.0.0"}}, |
| 85 | "no release": {"bucket", Floor{Min: 1}}, |
| 86 | "not a tag": {"bucket", Floor{Min: 1, MinRelease: "1.0.0"}}, |
| 87 | "build, not tag": {"bucket", Floor{Min: 1, MinRelease: "26065378"}}, |
| 88 | } { |
| 89 | t.Run(name, func(t *testing.T) { |
| 90 | if _, err := ArmedPolicy(sg, tc.bucket, tc.floor); err == nil { |
| 91 | t.Fatal("signed an invalid floor") |
| 92 | } |
| 93 | if _, _, err := Authorize(sg, tc.bucket, tc.floor); err == nil { |
| 94 | t.Fatal("authorized an invalid floor") |
| 95 | } |
| 96 | }) |
| 97 | } |
| 98 | } |
| 99 | |
amadan