| 1 | package release |
| 2 | |
| 3 | import ( |
| 4 | "encoding/json" |
| 5 | "math" |
| 6 | "os" |
| 7 | "strings" |
| 8 | "time" |
| 9 | |
| 10 | "github.com/carlosframework/platform/internal/rootstate" |
| 11 | ) |
| 12 | |
| 13 | const rootBakeKey = "bake.json" |
| 14 | |
| 15 | type rootBakeRecord struct { |
| 16 | Schema int `json:"schema"` |
| 17 | Revision uint64 `json:"revision"` |
| 18 | Complete map[string]uint64 `json:"complete"` |
| 19 | Observed time.Time `json:"observed"` |
| 20 | Clock FirstSeen `json:"clock"` |
| 21 | } |
| 22 | |
| 23 | func validRootBake(r rootBakeRecord) bool { |
| 24 | if r.Schema != 1 || r.Revision == 0 || r.Observed.IsZero() || r.Complete == nil || |
| 25 | r.Clock.Channels == nil || math.IsNaN(r.Clock.Jitter) || r.Clock.Jitter < 0 || r.Clock.Jitter >= .25 { |
| 26 | return false |
| 27 | } |
| 28 | for key, revision := range r.Complete { |
| 29 | parts := strings.Split(key, clockSep) |
| 30 | if len(parts) != 2 || !ValidAccount(parts[0]) || !ValidApp(parts[1]) || revision == 0 || revision > r.Revision { |
| 31 | return false |
| 32 | } |
| 33 | } |
| 34 | for _, versions := range r.Clock.Channels { |
| 35 | if versions == nil || len(versions) > firstSeenKeep { |
| 36 | return false |
| 37 | } |
| 38 | for version, at := range versions { |
| 39 | if !ValidVersion(version) || at.IsZero() || at.After(r.Observed) { |
| 40 | return false |
| 41 | } |
| 42 | } |
| 43 | } |
| 44 | for _, mem := range r.Clock.Production { |
| 45 | if mem == nil || mem.OffFirstSeen.After(r.Observed) || mem.OffSetAt.IsZero() != mem.OffFirstSeen.IsZero() { |
| 46 | return false |
| 47 | } |
| 48 | } |
| 49 | for _, mem := range r.Clock.Holds { |
| 50 | if mem == nil || mem.Window < 0 || mem.Pending < 0 || mem.PendingAt.After(r.Observed) || mem.DeletedAt.After(r.Observed) { |
| 51 | return false |
| 52 | } |
| 53 | } |
| 54 | return true |
| 55 | } |
| 56 | |
| 57 | func (h *RootHistory) writeBake(r rootBakeRecord) error { |
| 58 | if h == nil || h.Store == nil || !validRootBake(r) { |
| 59 | return os.ErrPermission |
| 60 | } |
| 61 | raw, err := json.Marshal(r) |
| 62 | if err != nil { |
| 63 | return err |
| 64 | } |
| 65 | if len(raw) > rootstate.MaxRecord { |
| 66 | return os.ErrPermission |
| 67 | } |
| 68 | return h.Store.Write(rootBakeKey, raw) |
| 69 | } |
| 70 | |
| 71 | func (h *RootHistory) LoadBake(bindings []HistoryBinding, now time.Time) (*FirstSeen, error) { |
| 72 | if err := h.reconstructionReady(); err != nil { |
| 73 | return nil, err |
| 74 | } |
| 75 | if h == nil || h.Store == nil || now.IsZero() { |
| 76 | return nil, os.ErrPermission |
| 77 | } |
| 78 | raw, err := h.Store.Read(rootBakeKey) |
| 79 | if err != nil { |
| 80 | return nil, err |
| 81 | } |
| 82 | var r rootBakeRecord |
| 83 | if len(raw) > rootstate.MaxRecord || strictCanonicalJSON(raw, &r) != nil || !validRootBake(r) || now.Before(r.Observed) { |
| 84 | return nil, os.ErrPermission |
| 85 | } |
| 86 | for _, b := range bindings { |
| 87 | if !b.valid() || r.Complete[prodKey(b.Account, b.App)] == 0 { |
| 88 | return nil, os.ErrPermission |
| 89 | } |
| 90 | } |
| 91 | if err := h.Store.Write(rootBakeKey, raw); err != nil { |
| 92 | return nil, err |
| 93 | } |
| 94 | clock := r.Clock |
| 95 | clock.migrated = true |
| 96 | clock.save = func() error { |
| 97 | if r.Revision == ^uint64(0) { |
| 98 | return os.ErrPermission |
| 99 | } |
| 100 | r.Revision++ |
| 101 | r.Observed, r.Clock = now.UTC(), clock |
| 102 | for key := range r.Complete { |
| 103 | r.Complete[key] = r.Revision |
| 104 | } |
| 105 | return h.writeBake(r) |
| 106 | } |
| 107 | return &clock, nil |
| 108 | } |
| 109 | |
amadan