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