d7c1abbfb6
Wrap deferred rc.Close() in closures to explicitly discard the error. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
75 lines
2.3 KiB
Go
75 lines
2.3 KiB
Go
package backup
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import (
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"archive/zip"
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"encoding/json"
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"fmt"
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"io"
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"time"
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)
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const (
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// FormatVersion / FormatName identify the backup archive format. They are
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// byte-identical to the cms constants (backupFormatVersion / backupFormatName)
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// so archives interoperate with the existing cms restore path.
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FormatVersion = 3
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FormatName = "blockninja-pgdump-backup"
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)
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// Source identifies where a backup came from. Field-for-field identical to the
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// cms BackupSource JSON shape.
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type Source struct {
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SiteTitle string `json:"site_title"`
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Domain string `json:"domain,omitempty"`
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}
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// Manifest is the metadata stored in manifest.json. It is a field-for-field copy
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// of the cms BackupManifest so archives built here restore through the existing
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// cms path unchanged.
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type Manifest struct {
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Version int `json:"version"`
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Format string `json:"format"`
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ExportedAt time.Time `json:"exported_at"`
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Source Source `json:"source"`
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DatabaseSize int64 `json:"database_size"`
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MediaCount int `json:"media_count"`
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BrandCount int `json:"brand_count,omitempty"`
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IconsCount int `json:"icons_count,omitempty"`
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StylesCount int `json:"styles_count,omitempty"`
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PluginsCount int `json:"plugins_count,omitempty"`
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Encryption *EncryptionParams `json:"encryption,omitempty"`
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Checksum string `json:"checksum"` // SHA-256 of unencrypted database dump
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}
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// ReadManifest opens a backup zip archive and parses its manifest.json entry.
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func ReadManifest(r io.ReaderAt, size int64) (*Manifest, error) {
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zr, err := zip.NewReader(r, size)
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if err != nil {
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return nil, fmt.Errorf("failed to open backup archive: %w", err)
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}
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for _, f := range zr.File {
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if f.Name != "manifest.json" {
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continue
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}
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rc, err := f.Open()
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if err != nil {
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return nil, fmt.Errorf("failed to open manifest.json: %w", err)
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}
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defer func() { _ = rc.Close() }()
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data, err := io.ReadAll(rc)
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if err != nil {
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return nil, fmt.Errorf("failed to read manifest.json: %w", err)
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}
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var m Manifest
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if err := json.Unmarshal(data, &m); err != nil {
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return nil, fmt.Errorf("failed to parse manifest.json: %w", err)
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}
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return &m, nil
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}
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return nil, fmt.Errorf("manifest.json not found in backup archive")
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}
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