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455 lines
12 KiB
Go
455 lines
12 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Copyright 2018 Jonas Franz. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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"context"
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"fmt"
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"net"
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"net/url"
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"path/filepath"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/matchlist"
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"code.gitea.io/gitea/modules/migrations/base"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/util"
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)
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// MigrateOptions is equal to base.MigrateOptions
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type MigrateOptions = base.MigrateOptions
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var (
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factories []base.DownloaderFactory
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allowList *matchlist.Matchlist
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blockList *matchlist.Matchlist
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)
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// RegisterDownloaderFactory registers a downloader factory
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func RegisterDownloaderFactory(factory base.DownloaderFactory) {
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factories = append(factories, factory)
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}
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// IsMigrateURLAllowed checks if an URL is allowed to be migrated from
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func IsMigrateURLAllowed(remoteURL string, doer *models.User) error {
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// Remote address can be HTTP/HTTPS/Git URL or local path.
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u, err := url.Parse(strings.ToLower(remoteURL))
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if err != nil {
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return &models.ErrInvalidCloneAddr{IsURLError: true}
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}
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if u.Scheme == "file" || u.Scheme == "" {
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if !doer.CanImportLocal() {
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return &models.ErrInvalidCloneAddr{Host: "<LOCAL_FILESYSTEM>", IsPermissionDenied: true, LocalPath: true}
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}
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isAbs := filepath.IsAbs(u.Host + u.Path)
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if !isAbs {
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return &models.ErrInvalidCloneAddr{Host: "<LOCAL_FILESYSTEM>", IsInvalidPath: true, LocalPath: true}
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}
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isDir, err := util.IsDir(u.Host + u.Path)
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if err != nil {
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log.Error("Unable to check if %s is a directory: %v", u.Host+u.Path, err)
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return err
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}
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if !isDir {
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return &models.ErrInvalidCloneAddr{Host: "<LOCAL_FILESYSTEM>", IsInvalidPath: true, LocalPath: true}
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}
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return nil
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}
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if u.Scheme == "git" && u.Port() != "" && (strings.Contains(remoteURL, "%0d") || strings.Contains(remoteURL, "%0a")) {
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return &models.ErrInvalidCloneAddr{Host: u.Host, IsURLError: true}
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}
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if u.Opaque != "" || u.Scheme != "" && u.Scheme != "http" && u.Scheme != "https" && u.Scheme != "git" {
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return &models.ErrInvalidCloneAddr{Host: u.Host, IsProtocolInvalid: true, IsPermissionDenied: true, IsURLError: true}
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}
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if len(setting.Migrations.AllowedDomains) > 0 {
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if !allowList.Match(u.Host) {
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return &models.ErrInvalidCloneAddr{Host: u.Host, IsPermissionDenied: true}
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}
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} else {
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if blockList.Match(u.Host) {
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return &models.ErrInvalidCloneAddr{Host: u.Host, IsPermissionDenied: true}
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}
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}
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if !setting.Migrations.AllowLocalNetworks {
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addrList, err := net.LookupIP(strings.Split(u.Host, ":")[0])
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if err != nil {
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return &models.ErrInvalidCloneAddr{Host: u.Host, NotResolvedIP: true}
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}
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for _, addr := range addrList {
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if isIPPrivate(addr) || !addr.IsGlobalUnicast() {
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return &models.ErrInvalidCloneAddr{Host: u.Host, PrivateNet: addr.String(), IsPermissionDenied: true}
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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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// MigrateRepository migrate repository according MigrateOptions
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func MigrateRepository(ctx context.Context, doer *models.User, ownerName string, opts base.MigrateOptions) (*models.Repository, error) {
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err := IsMigrateURLAllowed(opts.CloneAddr, doer)
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if err != nil {
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return nil, err
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}
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downloader, err := newDownloader(ctx, ownerName, opts)
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if err != nil {
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return nil, err
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}
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var uploader = NewGiteaLocalUploader(ctx, doer, ownerName, opts.RepoName)
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uploader.gitServiceType = opts.GitServiceType
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if err := migrateRepository(downloader, uploader, opts); err != nil {
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if err1 := uploader.Rollback(); err1 != nil {
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log.Error("rollback failed: %v", err1)
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}
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if err2 := models.CreateRepositoryNotice(fmt.Sprintf("Migrate repository from %s failed: %v", opts.OriginalURL, err)); err2 != nil {
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log.Error("create respotiry notice failed: ", err2)
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}
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return nil, err
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}
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return uploader.repo, nil
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}
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func newDownloader(ctx context.Context, ownerName string, opts base.MigrateOptions) (base.Downloader, error) {
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var (
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downloader base.Downloader
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err error
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)
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for _, factory := range factories {
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if factory.GitServiceType() == opts.GitServiceType {
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downloader, err = factory.New(ctx, opts)
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if err != nil {
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return nil, err
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}
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break
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}
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}
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if downloader == nil {
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opts.Wiki = true
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opts.Milestones = false
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opts.Labels = false
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opts.Releases = false
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opts.Comments = false
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opts.Issues = false
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opts.PullRequests = false
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downloader = NewPlainGitDownloader(ownerName, opts.RepoName, opts.CloneAddr)
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log.Trace("Will migrate from git: %s", opts.OriginalURL)
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}
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if setting.Migrations.MaxAttempts > 1 {
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downloader = base.NewRetryDownloader(ctx, downloader, setting.Migrations.MaxAttempts, setting.Migrations.RetryBackoff)
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}
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return downloader, nil
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}
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// migrateRepository will download information and then upload it to Uploader, this is a simple
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// process for small repository. For a big repository, save all the data to disk
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// before upload is better
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func migrateRepository(downloader base.Downloader, uploader base.Uploader, opts base.MigrateOptions) error {
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repo, err := downloader.GetRepoInfo()
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Info("migrating repo infos is not supported, ignored")
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}
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repo.IsPrivate = opts.Private
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repo.IsMirror = opts.Mirror
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if opts.Description != "" {
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repo.Description = opts.Description
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}
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if repo.CloneURL, err = downloader.FormatCloneURL(opts, repo.CloneURL); err != nil {
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return err
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}
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log.Trace("migrating git data")
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if err = uploader.CreateRepo(repo, opts); err != nil {
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return err
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}
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defer uploader.Close()
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log.Trace("migrating topics")
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topics, err := downloader.GetTopics()
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating topics is not supported, ignored")
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}
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if len(topics) != 0 {
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if err = uploader.CreateTopics(topics...); err != nil {
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return err
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}
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}
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if opts.Milestones {
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log.Trace("migrating milestones")
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milestones, err := downloader.GetMilestones()
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating milestones is not supported, ignored")
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}
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msBatchSize := uploader.MaxBatchInsertSize("milestone")
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for len(milestones) > 0 {
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if len(milestones) < msBatchSize {
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msBatchSize = len(milestones)
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}
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if err := uploader.CreateMilestones(milestones...); err != nil {
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return err
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}
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milestones = milestones[msBatchSize:]
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}
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}
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if opts.Labels {
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log.Trace("migrating labels")
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labels, err := downloader.GetLabels()
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating labels is not supported, ignored")
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}
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lbBatchSize := uploader.MaxBatchInsertSize("label")
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for len(labels) > 0 {
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if len(labels) < lbBatchSize {
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lbBatchSize = len(labels)
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}
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if err := uploader.CreateLabels(labels...); err != nil {
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return err
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}
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labels = labels[lbBatchSize:]
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}
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}
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if opts.Releases {
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log.Trace("migrating releases")
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releases, err := downloader.GetReleases()
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating releases is not supported, ignored")
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}
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relBatchSize := uploader.MaxBatchInsertSize("release")
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for len(releases) > 0 {
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if len(releases) < relBatchSize {
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relBatchSize = len(releases)
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}
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if err = uploader.CreateReleases(releases[:relBatchSize]...); err != nil {
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return err
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}
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releases = releases[relBatchSize:]
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}
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// Once all releases (if any) are inserted, sync any remaining non-release tags
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if err = uploader.SyncTags(); err != nil {
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return err
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}
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}
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var (
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commentBatchSize = uploader.MaxBatchInsertSize("comment")
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reviewBatchSize = uploader.MaxBatchInsertSize("review")
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)
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if opts.Issues {
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log.Trace("migrating issues and comments")
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var issueBatchSize = uploader.MaxBatchInsertSize("issue")
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for i := 1; ; i++ {
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issues, isEnd, err := downloader.GetIssues(i, issueBatchSize)
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating issues is not supported, ignored")
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break
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}
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if err := uploader.CreateIssues(issues...); err != nil {
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return err
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}
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if opts.Comments {
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var allComments = make([]*base.Comment, 0, commentBatchSize)
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for _, issue := range issues {
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log.Trace("migrating issue %d's comments", issue.Number)
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comments, err := downloader.GetComments(issue.Number)
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating comments is not supported, ignored")
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}
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allComments = append(allComments, comments...)
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if len(allComments) >= commentBatchSize {
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if err = uploader.CreateComments(allComments[:commentBatchSize]...); err != nil {
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return err
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}
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allComments = allComments[commentBatchSize:]
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}
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}
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if len(allComments) > 0 {
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if err = uploader.CreateComments(allComments...); err != nil {
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return err
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}
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}
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}
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if isEnd {
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break
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}
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}
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}
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if opts.PullRequests {
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log.Trace("migrating pull requests and comments")
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var prBatchSize = uploader.MaxBatchInsertSize("pullrequest")
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for i := 1; ; i++ {
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prs, isEnd, err := downloader.GetPullRequests(i, prBatchSize)
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating pull requests is not supported, ignored")
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break
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}
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if err := uploader.CreatePullRequests(prs...); err != nil {
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return err
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}
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if opts.Comments {
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// plain comments
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var allComments = make([]*base.Comment, 0, commentBatchSize)
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for _, pr := range prs {
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log.Trace("migrating pull request %d's comments", pr.Number)
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comments, err := downloader.GetComments(pr.Number)
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating comments is not supported, ignored")
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}
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allComments = append(allComments, comments...)
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if len(allComments) >= commentBatchSize {
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if err = uploader.CreateComments(allComments[:commentBatchSize]...); err != nil {
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return err
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}
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allComments = allComments[commentBatchSize:]
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}
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}
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if len(allComments) > 0 {
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if err = uploader.CreateComments(allComments...); err != nil {
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return err
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}
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}
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// migrate reviews
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var allReviews = make([]*base.Review, 0, reviewBatchSize)
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for _, pr := range prs {
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number := pr.Number
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// on gitlab migrations pull number change
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if pr.OriginalNumber > 0 {
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number = pr.OriginalNumber
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}
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reviews, err := downloader.GetReviews(number)
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if err != nil {
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if !base.IsErrNotSupported(err) {
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return err
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}
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log.Warn("migrating reviews is not supported, ignored")
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break
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}
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if pr.OriginalNumber > 0 {
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for i := range reviews {
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reviews[i].IssueIndex = pr.Number
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}
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}
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allReviews = append(allReviews, reviews...)
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if len(allReviews) >= reviewBatchSize {
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if err = uploader.CreateReviews(allReviews[:reviewBatchSize]...); err != nil {
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return err
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}
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allReviews = allReviews[reviewBatchSize:]
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}
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}
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if len(allReviews) > 0 {
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if err = uploader.CreateReviews(allReviews...); err != nil {
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return err
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}
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}
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}
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if isEnd {
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break
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}
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}
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}
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return uploader.Finish()
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}
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// Init migrations service
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func Init() error {
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var err error
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allowList, err = matchlist.NewMatchlist(setting.Migrations.AllowedDomains...)
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if err != nil {
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return fmt.Errorf("init migration allowList domains failed: %v", err)
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}
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blockList, err = matchlist.NewMatchlist(setting.Migrations.BlockedDomains...)
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if err != nil {
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return fmt.Errorf("init migration blockList domains failed: %v", err)
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}
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return nil
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}
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// isIPPrivate reports whether ip is a private address, according to
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// RFC 1918 (IPv4 addresses) and RFC 4193 (IPv6 addresses).
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// from https://github.com/golang/go/pull/42793
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// TODO remove if https://github.com/golang/go/issues/29146 got resolved
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func isIPPrivate(ip net.IP) bool {
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if ip4 := ip.To4(); ip4 != nil {
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return ip4[0] == 10 ||
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(ip4[0] == 172 && ip4[1]&0xf0 == 16) ||
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(ip4[0] == 192 && ip4[1] == 168)
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}
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return len(ip) == net.IPv6len && ip[0]&0xfe == 0xfc
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}
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