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414 lines
12 KiB
414 lines
12 KiB
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package debian
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import (
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"bytes"
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"compress/gzip"
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"context"
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"errors"
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"fmt"
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"io"
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"sort"
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"strings"
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"time"
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packages_model "code.gitea.io/gitea/models/packages"
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debian_model "code.gitea.io/gitea/models/packages/debian"
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user_model "code.gitea.io/gitea/models/user"
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packages_module "code.gitea.io/gitea/modules/packages"
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debian_module "code.gitea.io/gitea/modules/packages/debian"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/util"
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packages_service "code.gitea.io/gitea/services/packages"
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"github.com/keybase/go-crypto/openpgp"
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"github.com/keybase/go-crypto/openpgp/armor"
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"github.com/keybase/go-crypto/openpgp/clearsign"
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"github.com/keybase/go-crypto/openpgp/packet"
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"github.com/ulikunitz/xz"
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)
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// GetOrCreateRepositoryVersion gets or creates the internal repository package
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// The Debian registry needs multiple index files which are stored in this package.
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func GetOrCreateRepositoryVersion(ctx context.Context, ownerID int64) (*packages_model.PackageVersion, error) {
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return packages_service.GetOrCreateInternalPackageVersion(ctx, ownerID, packages_model.TypeDebian, debian_module.RepositoryPackage, debian_module.RepositoryVersion)
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}
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// GetOrCreateKeyPair gets or creates the PGP keys used to sign repository files
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func GetOrCreateKeyPair(ctx context.Context, ownerID int64) (string, string, error) {
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priv, err := user_model.GetSetting(ctx, ownerID, debian_module.SettingKeyPrivate)
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if err != nil && !errors.Is(err, util.ErrNotExist) {
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return "", "", err
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}
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pub, err := user_model.GetSetting(ctx, ownerID, debian_module.SettingKeyPublic)
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if err != nil && !errors.Is(err, util.ErrNotExist) {
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return "", "", err
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}
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if priv == "" || pub == "" {
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priv, pub, err = generateKeypair()
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if err != nil {
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return "", "", err
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}
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if err := user_model.SetUserSetting(ctx, ownerID, debian_module.SettingKeyPrivate, priv); err != nil {
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return "", "", err
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}
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if err := user_model.SetUserSetting(ctx, ownerID, debian_module.SettingKeyPublic, pub); err != nil {
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return "", "", err
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}
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}
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return priv, pub, nil
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}
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func generateKeypair() (string, string, error) {
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e, err := openpgp.NewEntity("", "Debian Registry", "", nil)
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if err != nil {
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return "", "", err
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}
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var priv strings.Builder
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var pub strings.Builder
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w, err := armor.Encode(&priv, openpgp.PrivateKeyType, nil)
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if err != nil {
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return "", "", err
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}
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if err := e.SerializePrivate(w, nil); err != nil {
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return "", "", err
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}
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w.Close()
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w, err = armor.Encode(&pub, openpgp.PublicKeyType, nil)
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if err != nil {
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return "", "", err
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}
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if err := e.Serialize(w); err != nil {
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return "", "", err
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}
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w.Close()
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return priv.String(), pub.String(), nil
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}
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// BuildAllRepositoryFiles (re)builds all repository files for every available distributions, components and architectures
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func BuildAllRepositoryFiles(ctx context.Context, ownerID int64) error {
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pv, err := GetOrCreateRepositoryVersion(ctx, ownerID)
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if err != nil {
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return err
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}
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// 1. Delete all existing repository files
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pfs, err := packages_model.GetFilesByVersionID(ctx, pv.ID)
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if err != nil {
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return err
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}
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for _, pf := range pfs {
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if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
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return err
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}
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}
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// 2. (Re)Build repository files for existing packages
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distributions, err := debian_model.GetDistributions(ctx, ownerID)
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if err != nil {
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return err
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}
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for _, distribution := range distributions {
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components, err := debian_model.GetComponents(ctx, ownerID, distribution)
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if err != nil {
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return err
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}
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architectures, err := debian_model.GetArchitectures(ctx, ownerID, distribution)
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if err != nil {
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return err
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}
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for _, component := range components {
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for _, architecture := range architectures {
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if err := buildRepositoryFiles(ctx, ownerID, pv, distribution, component, architecture); err != nil {
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return fmt.Errorf("failed to build repository files [%s/%s/%s]: %w", distribution, component, architecture, err)
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}
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}
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}
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}
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return nil
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}
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// BuildSpecificRepositoryFiles builds index files for the repository
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func BuildSpecificRepositoryFiles(ctx context.Context, ownerID int64, distribution, component, architecture string) error {
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pv, err := GetOrCreateRepositoryVersion(ctx, ownerID)
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if err != nil {
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return err
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}
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return buildRepositoryFiles(ctx, ownerID, pv, distribution, component, architecture)
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}
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func buildRepositoryFiles(ctx context.Context, ownerID int64, repoVersion *packages_model.PackageVersion, distribution, component, architecture string) error {
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if err := buildPackagesIndices(ctx, ownerID, repoVersion, distribution, component, architecture); err != nil {
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return err
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}
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return buildReleaseFiles(ctx, ownerID, repoVersion, distribution)
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}
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// https://wiki.debian.org/DebianRepository/Format#A.22Packages.22_Indices
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func buildPackagesIndices(ctx context.Context, ownerID int64, repoVersion *packages_model.PackageVersion, distribution, component, architecture string) error {
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opts := &debian_model.PackageSearchOptions{
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OwnerID: ownerID,
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Distribution: distribution,
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Component: component,
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Architecture: architecture,
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}
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// Delete the package indices if there are no packages
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if has, err := debian_model.ExistPackages(ctx, opts); err != nil {
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return err
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} else if !has {
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key := fmt.Sprintf("%s|%s|%s", distribution, component, architecture)
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for _, filename := range []string{"Packages", "Packages.gz", "Packages.xz"} {
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pf, err := packages_model.GetFileForVersionByName(ctx, repoVersion.ID, filename, key)
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if err != nil && !errors.Is(err, util.ErrNotExist) {
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return err
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} else if pf == nil {
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continue
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}
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if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
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return err
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}
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}
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return nil
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}
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packagesContent, _ := packages_module.NewHashedBuffer()
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defer packagesContent.Close()
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packagesGzipContent, _ := packages_module.NewHashedBuffer()
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defer packagesGzipContent.Close()
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gzw := gzip.NewWriter(packagesGzipContent)
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packagesXzContent, _ := packages_module.NewHashedBuffer()
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defer packagesXzContent.Close()
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xzw, _ := xz.NewWriter(packagesXzContent)
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w := io.MultiWriter(packagesContent, gzw, xzw)
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addSeparator := false
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pfds, err := debian_model.SearchPackages(ctx, opts)
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if err != nil {
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return err
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}
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for _, pfd := range pfds {
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if addSeparator {
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fmt.Fprintln(w)
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}
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addSeparator = true
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fmt.Fprintf(w, "%s\n", strings.TrimSpace(pfd.Properties.GetByName(debian_module.PropertyControl)))
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fmt.Fprintf(w, "Filename: pool/%s/%s/%s\n", distribution, component, pfd.File.Name)
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fmt.Fprintf(w, "Size: %d\n", pfd.Blob.Size)
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fmt.Fprintf(w, "MD5sum: %s\n", pfd.Blob.HashMD5)
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fmt.Fprintf(w, "SHA1: %s\n", pfd.Blob.HashSHA1)
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fmt.Fprintf(w, "SHA256: %s\n", pfd.Blob.HashSHA256)
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fmt.Fprintf(w, "SHA512: %s\n", pfd.Blob.HashSHA512)
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}
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gzw.Close()
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xzw.Close()
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for _, file := range []struct {
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Name string
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Data packages_module.HashedSizeReader
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}{
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{"Packages", packagesContent},
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{"Packages.gz", packagesGzipContent},
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{"Packages.xz", packagesXzContent},
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} {
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_, err := packages_service.AddFileToPackageVersionInternal(
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ctx,
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repoVersion,
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&packages_service.PackageFileCreationInfo{
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PackageFileInfo: packages_service.PackageFileInfo{
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Filename: file.Name,
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CompositeKey: fmt.Sprintf("%s|%s|%s", distribution, component, architecture),
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},
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Creator: user_model.NewGhostUser(),
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Data: file.Data,
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IsLead: false,
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OverwriteExisting: true,
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Properties: map[string]string{
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debian_module.PropertyRepositoryIncludeInRelease: "",
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debian_module.PropertyDistribution: distribution,
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debian_module.PropertyComponent: component,
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debian_module.PropertyArchitecture: architecture,
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},
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},
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)
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if err != nil {
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return err
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}
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}
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return nil
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}
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// https://wiki.debian.org/DebianRepository/Format#A.22Release.22_files
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func buildReleaseFiles(ctx context.Context, ownerID int64, repoVersion *packages_model.PackageVersion, distribution string) error {
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pfs, _, err := packages_model.SearchFiles(ctx, &packages_model.PackageFileSearchOptions{
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VersionID: repoVersion.ID,
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Properties: map[string]string{
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debian_module.PropertyRepositoryIncludeInRelease: "",
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debian_module.PropertyDistribution: distribution,
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},
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})
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if err != nil {
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return err
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}
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// Delete the release files if there are no packages
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if len(pfs) == 0 {
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for _, filename := range []string{"Release", "Release.gpg", "InRelease"} {
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pf, err := packages_model.GetFileForVersionByName(ctx, repoVersion.ID, filename, distribution)
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if err != nil && !errors.Is(err, util.ErrNotExist) {
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return err
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} else if pf == nil {
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continue
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}
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if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
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return err
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}
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}
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return nil
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}
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components, err := debian_model.GetComponents(ctx, ownerID, distribution)
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if err != nil {
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return err
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}
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sort.Strings(components)
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architectures, err := debian_model.GetArchitectures(ctx, ownerID, distribution)
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if err != nil {
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return err
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}
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sort.Strings(architectures)
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priv, _, err := GetOrCreateKeyPair(ctx, ownerID)
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if err != nil {
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return err
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}
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block, err := armor.Decode(strings.NewReader(priv))
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if err != nil {
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return err
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}
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e, err := openpgp.ReadEntity(packet.NewReader(block.Body))
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if err != nil {
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return err
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}
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inReleaseContent, _ := packages_module.NewHashedBuffer()
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defer inReleaseContent.Close()
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sw, err := clearsign.Encode(inReleaseContent, e.PrivateKey, nil)
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if err != nil {
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return err
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}
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var buf bytes.Buffer
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w := io.MultiWriter(sw, &buf)
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fmt.Fprintf(w, "Origin: %s\n", setting.AppName)
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fmt.Fprintf(w, "Label: %s\n", setting.AppName)
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fmt.Fprintf(w, "Suite: %s\n", distribution)
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fmt.Fprintf(w, "Codename: %s\n", distribution)
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fmt.Fprintf(w, "Components: %s\n", strings.Join(components, " "))
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fmt.Fprintf(w, "Architectures: %s\n", strings.Join(architectures, " "))
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fmt.Fprintf(w, "Date: %s\n", time.Now().UTC().Format(time.RFC1123))
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fmt.Fprint(w, "Acquire-By-Hash: yes\n")
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pfds, err := packages_model.GetPackageFileDescriptors(ctx, pfs)
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if err != nil {
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return err
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}
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var md5, sha1, sha256, sha512 strings.Builder
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for _, pfd := range pfds {
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path := fmt.Sprintf("%s/binary-%s/%s", pfd.Properties.GetByName(debian_module.PropertyComponent), pfd.Properties.GetByName(debian_module.PropertyArchitecture), pfd.File.Name)
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fmt.Fprintf(&md5, " %s %d %s\n", pfd.Blob.HashMD5, pfd.Blob.Size, path)
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fmt.Fprintf(&sha1, " %s %d %s\n", pfd.Blob.HashSHA1, pfd.Blob.Size, path)
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fmt.Fprintf(&sha256, " %s %d %s\n", pfd.Blob.HashSHA256, pfd.Blob.Size, path)
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fmt.Fprintf(&sha512, " %s %d %s\n", pfd.Blob.HashSHA512, pfd.Blob.Size, path)
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}
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fmt.Fprintln(w, "MD5Sum:")
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fmt.Fprint(w, md5.String())
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fmt.Fprintln(w, "SHA1:")
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fmt.Fprint(w, sha1.String())
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fmt.Fprintln(w, "SHA256:")
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fmt.Fprint(w, sha256.String())
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fmt.Fprintln(w, "SHA512:")
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fmt.Fprint(w, sha512.String())
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sw.Close()
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releaseGpgContent, _ := packages_module.NewHashedBuffer()
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defer releaseGpgContent.Close()
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if err := openpgp.ArmoredDetachSign(releaseGpgContent, e, bytes.NewReader(buf.Bytes()), nil); err != nil {
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return err
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}
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releaseContent, _ := packages_module.CreateHashedBufferFromReader(&buf)
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defer releaseContent.Close()
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for _, file := range []struct {
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Name string
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Data packages_module.HashedSizeReader
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}{
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{"Release", releaseContent},
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{"Release.gpg", releaseGpgContent},
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{"InRelease", inReleaseContent},
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} {
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_, err = packages_service.AddFileToPackageVersionInternal(
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ctx,
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repoVersion,
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&packages_service.PackageFileCreationInfo{
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PackageFileInfo: packages_service.PackageFileInfo{
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Filename: file.Name,
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CompositeKey: distribution,
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},
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Creator: user_model.NewGhostUser(),
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Data: file.Data,
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IsLead: false,
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OverwriteExisting: true,
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Properties: map[string]string{
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debian_module.PropertyDistribution: distribution,
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},
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},
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)
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if err != nil {
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return err
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}
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}
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return nil
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}
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