chore: initialize standalone business plugin repository

2026-08-27 23:36:08 +08:00
commit 5feae3ad41
59 changed files with 8950 additions and 0 deletions
@@ -0,0 +1,204 @@
+package manifest
+
+import (
+	"crypto/ed25519"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+var pluginIDPattern = regexp.MustCompile(`^[a-z0-9]+([._-][a-z0-9]+)+$`)
+var versionPattern = regexp.MustCompile(`^(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$`)
+
+var requiredAllowlist = []string{
+	"POST /api/v1/auth/login",
+	"POST /api/v1/auth/login/2fa",
+	"POST /api/v1/auth/refresh",
+	"POST /api/v1/auth/logout",
+	"GET /api/v1/auth/me",
+	"GET /api/v1/settings/public",
+	"GET /api/v1/admin/payment/plans",
+	"GET /api/v1/admin/subscriptions",
+	"GET /api/v1/admin/subscriptions/{id}",
+	"GET /api/v1/admin/users/{id}",
+	"GET /api/v1/admin/users/{id}/subscriptions",
+}
+
+type Manifest struct {
+	SchemaVersion      int      `json:"schema_version"`
+	PluginID           string   `json:"plugin_id"`
+	Name               string   `json:"name"`
+	Version            string   `json:"version"`
+	CoreAPIBaseline    string   `json:"core_api_baseline"`
+	Capabilities       []string `json:"capabilities"`
+	TestedCoreVersions []string `json:"tested_core_versions"`
+	Backend            struct {
+		HealthPath    string `json:"health_path"`
+		ReadinessPath string `json:"readiness_path"`
+		ListenEnv     string `json:"listen_env"`
+	} `json:"backend"`
+	UI struct {
+		Entrypoint string `json:"entrypoint"`
+		Menu       struct {
+			ID         string `json:"id"`
+			Label      string `json:"label"`
+			Visibility string `json:"visibility"`
+			SortOrder  int    `json:"sort_order"`
+		} `json:"menu"`
+	} `json:"ui"`
+	Publisher struct {
+		KeyID string `json:"key_id"`
+	} `json:"publisher"`
+	CoreAPIAllowlist []string          `json:"core_api_allowlist"`
+	Files            map[string]string `json:"files,omitempty"`
+}
+
+type Signature struct {
+	Algorithm string `json:"algorithm"`
+	KeyID     string `json:"key_id"`
+	Signature string `json:"signature"`
+}
+
+func Load(path string) (Manifest, []byte, error) {
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return Manifest{}, nil, err
+	}
+	var m Manifest
+	dec := json.NewDecoder(strings.NewReader(string(raw)))
+	dec.DisallowUnknownFields()
+	if err := dec.Decode(&m); err != nil {
+		return Manifest{}, nil, fmt.Errorf("decode manifest: %w", err)
+	}
+	var trailing any
+	if err := dec.Decode(&trailing); err != io.EOF {
+		if err == nil {
+			return Manifest{}, nil, errors.New("manifest contains trailing JSON")
+		}
+		return Manifest{}, nil, fmt.Errorf("decode manifest trailing data: %w", err)
+	}
+	if err := Validate(m); err != nil {
+		return Manifest{}, nil, err
+	}
+	return m, raw, nil
+}
+
+func Validate(m Manifest) error {
+	if m.SchemaVersion != 1 {
+		return fmt.Errorf("schema_version must be 1")
+	}
+	if !pluginIDPattern.MatchString(m.PluginID) {
+		return fmt.Errorf("invalid plugin_id")
+	}
+	if strings.TrimSpace(m.Name) == "" || len(m.Name) > 160 {
+		return fmt.Errorf("name is required and must be at most 160 characters")
+	}
+	if !versionPattern.MatchString(strings.TrimPrefix(m.Version, "v")) {
+		return fmt.Errorf("invalid plugin version")
+	}
+	baseline := strings.TrimPrefix(m.CoreAPIBaseline, "sub2api-")
+	if !versionPattern.MatchString(strings.TrimPrefix(baseline, "v")) {
+		return fmt.Errorf("invalid core_api_baseline")
+	}
+	if len(m.Capabilities) != 1 || m.Capabilities[0] != "subscription.admin.v1" {
+		return fmt.Errorf("capabilities must contain subscription.admin.v1 only")
+	}
+	for _, version := range m.TestedCoreVersions {
+		if !versionPattern.MatchString(strings.TrimPrefix(version, "v")) {
+			return fmt.Errorf("invalid tested_core_versions entry")
+		}
+	}
+	if m.Backend.HealthPath != "/healthz" || m.Backend.ReadinessPath != "/readyz" || m.Backend.ListenEnv != "PLUGIN_PORT" {
+		return fmt.Errorf("backend health_path/listen_env do not match V1 contract")
+	}
+	if (m.UI.Entrypoint != "/admin" && m.UI.Entrypoint != "/admin/" && m.UI.Entrypoint != "ui/index.html") || m.UI.Menu.ID != m.PluginID || strings.TrimSpace(m.UI.Menu.Label) == "" || m.UI.Menu.Visibility != "admin" || m.UI.Menu.SortOrder < 0 || m.Publisher.KeyID == "" {
+		return fmt.Errorf("ui.entrypoint/menu and publisher.key_id are required")
+	}
+	if len(m.CoreAPIAllowlist) != len(requiredAllowlist) {
+		return fmt.Errorf("core_api_allowlist must contain exactly %d entries", len(requiredAllowlist))
+	}
+	seen := make(map[string]struct{}, len(m.CoreAPIAllowlist))
+	for _, entry := range m.CoreAPIAllowlist {
+		if _, ok := seen[entry]; ok {
+			return fmt.Errorf("duplicate allowlist entry: %s", entry)
+		}
+		seen[entry] = struct{}{}
+	}
+	for _, required := range requiredAllowlist {
+		if _, ok := seen[required]; !ok {
+			return fmt.Errorf("missing allowlist entry: %s", required)
+		}
+	}
+	for file, hash := range m.Files {
+		if strings.TrimSpace(file) == "" || strings.HasPrefix(strings.ReplaceAll(file, "\\", "/"), "/") || strings.Contains(strings.ReplaceAll(file, "\\", "/"), "..") {
+			return fmt.Errorf("invalid file declaration: %s", file)
+		}
+		if _, err := hex.DecodeString(hash); err != nil || len(hash) != 64 {
+			return fmt.Errorf("invalid file hash declaration: %s", file)
+		}
+	}
+	return nil
+}
+
+// DeclaredFiles returns file paths in deterministic order for package tooling.
+func DeclaredFiles(m Manifest) []string {
+	files := make([]string, 0, len(m.Files))
+	for file := range m.Files {
+		files = append(files, file)
+	}
+	sort.Strings(files)
+	return files
+}
+
+func VerifySignature(manifestBytes, signatureBytes, publicKeyBytes []byte) error {
+	var signature Signature
+	dec := json.NewDecoder(strings.NewReader(string(signatureBytes)))
+	dec.DisallowUnknownFields()
+	if err := dec.Decode(&signature); err != nil {
+		return fmt.Errorf("decode signature: %w", err)
+	}
+	var trailing any
+	if err := dec.Decode(&trailing); err != io.EOF {
+		if err == nil {
+			return errors.New("signature contains trailing JSON")
+		}
+		return fmt.Errorf("decode signature trailing data: %w", err)
+	}
+	if signature.Algorithm != "ed25519" || signature.KeyID == "" {
+		return errors.New("signature must use ed25519 and include key_id")
+	}
+	publicKey, err := base64.StdEncoding.DecodeString(strings.TrimSpace(string(publicKeyBytes)))
+	if err != nil || len(publicKey) != ed25519.PublicKeySize {
+		return errors.New("invalid base64 ed25519 public key")
+	}
+	sig, err := base64.StdEncoding.DecodeString(signature.Signature)
+	if err != nil || len(sig) != ed25519.SignatureSize {
+		return errors.New("invalid base64 ed25519 signature")
+	}
+	if !ed25519.Verify(ed25519.PublicKey(publicKey), manifestBytes, sig) {
+		return errors.New("manifest signature verification failed")
+	}
+	return nil
+}
+
+func VerifyKeyID(signatureBytes []byte, expectedKeyID string) error {
+	var signature Signature
+	if err := json.Unmarshal(signatureBytes, &signature); err != nil {
+		return fmt.Errorf("decode signature: %w", err)
+	}
+	if strings.TrimSpace(expectedKeyID) == "" || signature.KeyID != expectedKeyID {
+		return errors.New("signature key_id does not match manifest publisher")
+	}
+	return nil
+}
+
+func RequiredAllowlist() []string {
+	return append([]string(nil), requiredAllowlist...)
+}