| 1 | // The healthy history — builds this box has run well (spec |
| 2 | // 2026-10-06-console-release-defences-design.md §4.5). A sha256 in an app's |
| 3 | // history is adopted with no proof, which is what lets a requiring box roll |
| 4 | // back to a build it ran before without waiting on the prover. |
| 5 | // |
| 6 | // Root writes it from two places in internal/host: when D1's settle check |
| 7 | // passes for a restarted named unit (How "settle"), and when a root pass finds |
| 8 | // a named-unit route's live build bound, active in one invocation for the |
| 9 | // policy's after, hashed from its running executable and ready (How "live"). |
| 10 | // Every sha256 here was hashed from bytes, never copied from a manifest. It |
| 11 | // lives in the bake directory, which the sandboxed agent can read. |
| 12 | package release |
| 13 | |
| 14 | import ( |
| 15 | "encoding/json" |
| 16 | "fmt" |
| 17 | "log" |
| 18 | "path/filepath" |
| 19 | "time" |
| 20 | |
| 21 | "github.com/carlosframework/platform/internal/safefile" |
| 22 | ) |
| 23 | |
| 24 | const healthyMax = 50 |
| 25 | |
| 26 | type HealthyBuild struct { |
| 27 | SHA256 string `json:"sha256"` |
| 28 | Version string `json:"version,omitempty"` |
| 29 | How string `json:"how"` |
| 30 | At time.Time `json:"at"` |
| 31 | } |
| 32 | |
| 33 | type healthyFile struct { |
| 34 | Schema int `json:"schema"` |
| 35 | Builds []HealthyBuild `json:"builds"` |
| 36 | } |
| 37 | |
| 38 | func healthyPath(bakeDir, acct, app string) (string, error) { |
| 39 | if bakeDir == "" || !ValidAccount(acct) || !ValidApp(app) { |
| 40 | return "", fmt.Errorf("healthy history: invalid %q/%q", acct, app) |
| 41 | } |
| 42 | return filepath.Join(bakeDir, "healthy", acct, app+".json"), nil |
| 43 | } |
| 44 | |
| 45 | func ReadHealthy(bakeDir, acct, app string) []HealthyBuild { |
| 46 | if bakeDir == RootHealthyDir { |
| 47 | return readRootHealthy(acct, app) |
| 48 | } |
| 49 | p, err := healthyPath(bakeDir, acct, app) |
| 50 | if err != nil { |
| 51 | return nil |
| 52 | } |
| 53 | b, err := safefile.ReadFile(p) |
| 54 | if err != nil { |
| 55 | return nil |
| 56 | } |
| 57 | var f healthyFile |
| 58 | if err := json.Unmarshal(b, &f); err != nil || f.Schema != 1 { |
| 59 | log.Printf("healthy history: %s does not parse (%v), treating it as empty", p, err) |
| 60 | return nil |
| 61 | } |
| 62 | return f.Builds |
| 63 | } |
| 64 | |
| 65 | func IsHealthy(bakeDir, acct, app, sha string) bool { |
| 66 | if sha == "" { |
| 67 | return false |
| 68 | } |
| 69 | for _, b := range ReadHealthy(bakeDir, acct, app) { |
| 70 | if b.SHA256 == sha { |
| 71 | return true |
| 72 | } |
| 73 | } |
| 74 | return false |
| 75 | } |
| 76 | |
| 77 | // RecordHealthy adds b, newest first, keeping the first record of a sha256 |
| 78 | // and the newest healthyMax builds. Written atomically and world-readable, |
| 79 | // because the reader is the sandboxed agent. |
| 80 | func RecordHealthy(bakeDir, acct, app string, b HealthyBuild) error { |
| 81 | if bakeDir == RootHealthyDir { |
| 82 | return recordRootHealthy(acct, app, b) |
| 83 | } |
| 84 | p, err := healthyPath(bakeDir, acct, app) |
| 85 | if err != nil { |
| 86 | return err |
| 87 | } |
| 88 | if !sha256Re.MatchString(b.SHA256) { |
| 89 | return fmt.Errorf("healthy history: sha256 %q is not 64 lower-case hex digits", b.SHA256) |
| 90 | } |
| 91 | have := ReadHealthy(bakeDir, acct, app) |
| 92 | for _, h := range have { |
| 93 | if h.SHA256 == b.SHA256 { |
| 94 | return nil |
| 95 | } |
| 96 | } |
| 97 | builds := append([]HealthyBuild{b}, have...) |
| 98 | if len(builds) > healthyMax { |
| 99 | builds = builds[:healthyMax] |
| 100 | } |
| 101 | body, err := json.MarshalIndent(healthyFile{Schema: 1, Builds: builds}, "", " ") |
| 102 | if err != nil { |
| 103 | return err |
| 104 | } |
| 105 | if err := safefile.MkdirAll(filepath.Dir(p), 0o755); err != nil { |
| 106 | return err |
| 107 | } |
| 108 | return safefile.WriteFile(p, append(body, '\n'), 0o644) |
| 109 | } |
| 110 | |
amadan