| 1 | package release |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "crypto/rand" |
| 6 | "encoding/hex" |
| 7 | "os" |
| 8 | "slices" |
| 9 | "time" |
| 10 | |
| 11 | "github.com/carlosframework/platform/internal/hostwrite" |
| 12 | "github.com/carlosframework/platform/internal/registry" |
| 13 | ) |
| 14 | |
| 15 | type RootHistoryPass struct { |
| 16 | Creation func(context.Context, registry.Route) (string, error) |
| 17 | History *RootHistory |
| 18 | Resolve func(context.Context, registry.Route) (HistoryBinding, string, error) |
| 19 | Installed func(context.Context, registry.Route, string) (string, error) |
| 20 | Prepare func(context.Context, HistoryBinding, HistoryAttempt, hostwrite.Identity) error |
| 21 | Reconstruct func(context.Context, HistoryBinding) error |
| 22 | } |
| 23 | |
| 24 | type historySelection struct { |
| 25 | binding HistoryBinding |
| 26 | source string |
| 27 | creation string |
| 28 | } |
| 29 | |
| 30 | func WithRecovery(fn func(context.Context, registry.Route) (bool, error), legacy ...func() (bool, error)) PassOption { |
| 31 | return func(c *passConfig) { |
| 32 | c.recovery = fn |
| 33 | if len(legacy) == 1 { |
| 34 | c.legacyRecovery = legacy[0] |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | func WithRootHistory(h *RootHistoryPass) PassOption { |
| 40 | return func(c *passConfig) { |
| 41 | c.rootHistory = h |
| 42 | c.requireRootHistory = true |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | func (h *RootHistoryPass) resolve(ctx context.Context, rt registry.Route) (historySelection, error) { |
| 47 | if h == nil || h.History == nil || h.Resolve == nil { |
| 48 | return historySelection{}, os.ErrPermission |
| 49 | } |
| 50 | b, source, err := h.Resolve(ctx, rt) |
| 51 | if err != nil { |
| 52 | return historySelection{}, err |
| 53 | } |
| 54 | if !b.valid() || source == "" || b.Host != rt.Host || b.Account != RouteAccount(rt) || b.App != rt.App { |
| 55 | return historySelection{}, os.ErrPermission |
| 56 | } |
| 57 | creation := "" |
| 58 | if h.Creation != nil { |
| 59 | creation, err = h.Creation(ctx, rt) |
| 60 | if err != nil { |
| 61 | return historySelection{}, err |
| 62 | } |
| 63 | } |
| 64 | return historySelection{binding: b, source: source, creation: creation}, nil |
| 65 | } |
| 66 | |
| 67 | func (h *RootHistoryPass) selectRoute(ctx context.Context, rt registry.Route) (historySelection, error) { |
| 68 | sel, err := h.resolve(ctx, rt) |
| 69 | if err != nil { |
| 70 | return sel, err |
| 71 | } |
| 72 | if h.Installed == nil { |
| 73 | return sel, os.ErrPermission |
| 74 | } |
| 75 | if h.Reconstruct != nil { |
| 76 | if err := h.Reconstruct(ctx, sel.binding); err != nil { |
| 77 | return sel, err |
| 78 | } |
| 79 | if err := h.recheck(ctx, rt, sel); err != nil { |
| 80 | return sel, err |
| 81 | } |
| 82 | } |
| 83 | if _, err := h.History.Programs(sel.binding); err != nil { |
| 84 | return sel, err |
| 85 | } |
| 86 | _, err = h.History.Refusals(sel.binding) |
| 87 | return sel, err |
| 88 | } |
| 89 | |
| 90 | func (c passConfig) recheckHistory(ctx context.Context, rt registry.Route) error { |
| 91 | if !c.requireRootHistory { |
| 92 | return nil |
| 93 | } |
| 94 | return c.rootHistory.recheck(ctx, rt, c.historySelected[rt.Host]) |
| 95 | } |
| 96 | |
| 97 | func (c passConfig) bindProof(ctx context.Context, optDir string, rt registry.Route, ptr *ChannelPointer, v proofVerdict, cur string, now time.Time) bool { |
| 98 | if !c.requireRootHistory { |
| 99 | return c.proof.bind(optDir, rt, ptr, v, cur, now) |
| 100 | } |
| 101 | return c.proof.bindRecording(optDir, rt, ptr, v, cur, now, func(r Refusal) error { |
| 102 | err := c.recordRefusal(ctx, rt, r) |
| 103 | c.historyError(err) |
| 104 | return err |
| 105 | }) |
| 106 | } |
| 107 | |
| 108 | func (h *RootHistoryPass) recheck(ctx context.Context, rt registry.Route, want historySelection) error { |
| 109 | got, err := h.resolve(ctx, rt) |
| 110 | if err != nil { |
| 111 | return err |
| 112 | } |
| 113 | if got != want { |
| 114 | return os.ErrPermission |
| 115 | } |
| 116 | return nil |
| 117 | } |
| 118 | |
| 119 | func (h *RootHistoryPass) begin(ctx context.Context, rt registry.Route, sel historySelection, ptr *ChannelPointer, digest string, now time.Time, identity hostwrite.Identity) (string, error) { |
| 120 | if err := h.recheck(ctx, rt, sel); err != nil { |
| 121 | return "", err |
| 122 | } |
| 123 | var id [16]byte |
| 124 | if _, err := rand.Read(id[:]); err != nil { |
| 125 | return "", err |
| 126 | } |
| 127 | a := HistoryAttempt{ID: hex.EncodeToString(id[:]), Version: ptr.Version, Source: sel.source, Started: now.UTC(), SHA256: digest, Platform: adoptPlatform, PromotedAt: ptr.PromotedAt} |
| 128 | if err := h.History.Begin(sel.binding, a); err != nil { |
| 129 | return "", err |
| 130 | } |
| 131 | if h.Prepare != nil { |
| 132 | if err := h.Prepare(ctx, sel.binding, a, identity); err != nil { |
| 133 | return "", err |
| 134 | } |
| 135 | } |
| 136 | return a.ID, nil |
| 137 | } |
| 138 | |
| 139 | func (h *RootHistoryPass) CompleteAttempt(ctx context.Context, rt registry.Route, a HistoryAttempt) error { |
| 140 | sel, err := h.resolve(ctx, rt) |
| 141 | if err != nil { |
| 142 | return err |
| 143 | } |
| 144 | if sel.source != a.Source { |
| 145 | return os.ErrPermission |
| 146 | } |
| 147 | return h.complete(ctx, rt, sel, a.ID, a.Version) |
| 148 | } |
| 149 | |
| 150 | func (h *RootHistoryPass) complete(ctx context.Context, rt registry.Route, sel historySelection, id, version string) error { |
| 151 | if h.Installed == nil { |
| 152 | return os.ErrPermission |
| 153 | } |
| 154 | if err := h.recheck(ctx, rt, sel); err != nil { |
| 155 | return err |
| 156 | } |
| 157 | program, err := h.Installed(ctx, rt, version) |
| 158 | if err != nil { |
| 159 | return err |
| 160 | } |
| 161 | if err := h.recheck(ctx, rt, sel); err != nil { |
| 162 | return err |
| 163 | } |
| 164 | r, err := h.History.read(sel.binding) |
| 165 | if err != nil { |
| 166 | return err |
| 167 | } |
| 168 | if r.Attempt == nil || r.Attempt.ID != id || r.Attempt.Version != version || r.Attempt.Source != sel.source || r.Revision == ^uint64(0) { |
| 169 | return os.ErrPermission |
| 170 | } |
| 171 | if program != "" && !slices.Contains(r.Programs.Values, program) { |
| 172 | r.Programs.Values = append(r.Programs.Values, program) |
| 173 | } |
| 174 | r.Revision++ |
| 175 | r.Programs.Revision = r.Revision |
| 176 | r.Refusals.Values = slices.DeleteFunc(r.Refusals.Values, func(ref Refusal) bool { return ref.Version == version }) |
| 177 | r.Refusals.Revision = r.Revision |
| 178 | r.Attempt = nil |
| 179 | return h.History.write(r) |
| 180 | } |
| 181 | |
| 182 | func (c passConfig) historyError(err error) { |
| 183 | if err != nil && c.restartErrors != nil { |
| 184 | *c.restartErrors = append(*c.restartErrors, err) |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | func (c passConfig) recordRefusal(ctx context.Context, rt registry.Route, r Refusal) error { |
| 189 | if c.requireRootHistory { |
| 190 | sel, ok := c.historySelected[rt.Host] |
| 191 | if !ok { |
| 192 | return os.ErrPermission |
| 193 | } |
| 194 | if err := c.rootHistory.recheck(ctx, rt, sel); err != nil { |
| 195 | return err |
| 196 | } |
| 197 | if err := c.rootHistory.History.AddRefusal(sel.binding, r); err != nil { |
| 198 | return err |
| 199 | } |
| 200 | } |
| 201 | if c.bakeDir != "" { |
| 202 | return WriteRefusal(c.bakeDir, r) |
| 203 | } |
| 204 | return nil |
| 205 | } |
| 206 | |
amadan