| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "os" |
| 7 | |
| 8 | "github.com/carlosframework/platform/internal/moves" |
| 9 | "github.com/carlosframework/platform/internal/release" |
| 10 | "github.com/carlosframework/platform/internal/seeds" |
| 11 | ) |
| 12 | |
| 13 | type rootSeedsPublication struct { |
| 14 | Schema int |
| 15 | Deployment, Purpose string |
| 16 | Floor moves.Floor |
| 17 | } |
| 18 | |
| 19 | func verifyRootSeedsPublication(raw []byte, id rootFloorIdentity) (*moves.Floor, error) { |
| 20 | pub, err := release.ParsePublicKey(os.Getenv("CARLOS_RELEASE_PUBKEY"), "CARLOS_RELEASE_PUBKEY") |
| 21 | if err != nil { |
| 22 | return nil, err |
| 23 | } |
| 24 | var p rootSeedsPublication |
| 25 | if release.VerifyRootEnvelope(pub, raw, &p) != nil || p.Schema != 1 || p.Deployment != id.Deployment || p.Purpose != seeds.FloorKey || !validRootFloor(&p.Floor) { |
| 26 | return nil, errRootFloorHistory |
| 27 | } |
| 28 | return &p.Floor, nil |
| 29 | } |
| 30 | func readRootSeedsBound(opt string, id rootFloorIdentity) (*moves.Floor, error) { |
| 31 | f, err := openRootProtocolFloors(rootSeedsFloorDir(opt), id, false) |
| 32 | if errors.Is(err, os.ErrNotExist) { |
| 33 | return nil, nil |
| 34 | } |
| 35 | if err != nil { |
| 36 | return nil, err |
| 37 | } |
| 38 | defer f.close() |
| 39 | raw, err := f.public.Read("publication.json") |
| 40 | if errors.Is(err, os.ErrNotExist) { |
| 41 | return nil, nil |
| 42 | } |
| 43 | if err != nil { |
| 44 | return nil, err |
| 45 | } |
| 46 | published, err := verifyRootSeedsPublication(raw, id) |
| 47 | if err != nil { |
| 48 | return nil, err |
| 49 | } |
| 50 | bound, err := f.localBound() |
| 51 | if err != nil { |
| 52 | return nil, err |
| 53 | } |
| 54 | capped, err := f.capLegacy([]*moves.Floor{bound}) |
| 55 | if len(capped) > 0 { |
| 56 | published = floorMaximum(published, capped[0]) |
| 57 | } |
| 58 | return published, err |
| 59 | } |
| 60 | func acceptRootSeedsPublication(ctx context.Context, f rootMovesFloors, raw []byte) error { |
| 61 | bound, err := verifyRootSeedsPublication(raw, f.identity) |
| 62 | if err != nil { |
| 63 | return err |
| 64 | } |
| 65 | unlock, err := f.private.Lock(ctx, "floor.lock") |
| 66 | if err != nil { |
| 67 | return err |
| 68 | } |
| 69 | defer unlock() |
| 70 | previous, e := f.public.Read("publication.json") |
| 71 | if e == nil { |
| 72 | old, e := verifyRootSeedsPublication(previous, f.identity) |
| 73 | if e != nil { |
| 74 | return e |
| 75 | } |
| 76 | if floorRegression(old, bound) != nil { |
| 77 | return errRootFloorHistory |
| 78 | } |
| 79 | } else if !errors.Is(e, os.ErrNotExist) { |
| 80 | return e |
| 81 | } |
| 82 | return f.public.Write("publication.json", raw) |
| 83 | } |
| 84 | |
amadan