| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "crypto/sha256" |
| 6 | "encoding/hex" |
| 7 | "encoding/json" |
| 8 | "os" |
| 9 | |
| 10 | "github.com/carlosframework/platform/internal/hostclaim" |
| 11 | "github.com/carlosframework/platform/internal/hostguard" |
| 12 | "github.com/carlosframework/platform/internal/provision" |
| 13 | "github.com/carlosframework/platform/internal/registry" |
| 14 | "github.com/carlosframework/platform/internal/release" |
| 15 | "github.com/carlosframework/platform/internal/rootparticipation" |
| 16 | "github.com/carlosframework/platform/internal/rootstate" |
| 17 | ) |
| 18 | |
| 19 | type rootHistoryAccess func(context.Context, func(*release.RootHistory) error) error |
| 20 | |
| 21 | func productionCreationHistory(ctx context.Context, effect func(*release.RootHistory) error) error { |
| 22 | legacy, err := legacyRootRestart() |
| 23 | if err != nil { |
| 24 | return err |
| 25 | } |
| 26 | if legacy { |
| 27 | return os.ErrPermission |
| 28 | } |
| 29 | return participationRelease.With(ctx, func(ctx context.Context) error { |
| 30 | s, err := rootstate.Open(release.RootHistoryDir, true, false) |
| 31 | if err != nil { |
| 32 | return err |
| 33 | } |
| 34 | defer s.Close() |
| 35 | return effect(&release.RootHistory{Store: s}) |
| 36 | }) |
| 37 | } |
| 38 | |
| 39 | // Inventory additions do not change the identity of the installation. |
| 40 | func rootHistoryInstallation(in hostguard.RootInstallation) string { |
| 41 | in.Artifacts = hostguard.InstallationArtifacts{} |
| 42 | in.Empty = false |
| 43 | in.InventoryRevision = 0 |
| 44 | in.Registration = hostguard.InstallationRegistration{} |
| 45 | raw, _ := json.Marshal(in) |
| 46 | sum := sha256.Sum256(raw) |
| 47 | return hex.EncodeToString(sum[:]) |
| 48 | } |
| 49 | |
| 50 | func rootHistoryCreation(store release.Store) func(context.Context, registry.Route) (string, error) { |
| 51 | return func(ctx context.Context, rt registry.Route) (string, error) { |
| 52 | census, err := rootparticipation.Open() |
| 53 | if err != nil { |
| 54 | return "", err |
| 55 | } |
| 56 | defer census.State.Close() |
| 57 | state, err := rootstate.Open("/var/lib/carlos-claims/authority/fences", false, false) |
| 58 | if err != nil { |
| 59 | return "", err |
| 60 | } |
| 61 | defer state.Close() |
| 62 | return (rootRestartRequestSource{state: state, store: store, census: census.Census}).creation(ctx, rt) |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | func (s rootRestartRequestSource) creation(ctx context.Context, rt registry.Route) (string, error) { |
| 67 | in, err := s.installation(ctx, rt.Host) |
| 68 | if err != nil { |
| 69 | return "", err |
| 70 | } |
| 71 | if in.Host != rt.Host || in.Account != rt.Account || in.App != rt.App || in.Record != provision.RecordKey(in.Account, in.App, in.Host) { |
| 72 | return "", os.ErrPermission |
| 73 | } |
| 74 | rec, _, err := provision.GetRecordETag(ctx, s.store, in.Account, in.App, in.Host) |
| 75 | if err != nil { |
| 76 | return "", err |
| 77 | } |
| 78 | inc, err := hostclaim.Incarnation(rec.Account, rec.App, rec.Host, rec.CreatedAt) |
| 79 | if err != nil || inc != in.Incarnation { |
| 80 | return "", os.ErrPermission |
| 81 | } |
| 82 | return rootHistoryInstallation(in), nil |
| 83 | } |
| 84 | |
amadan