mirror of
https://github.com/go-gitea/gitea
synced 2024-12-23 22:04:33 +01:00
013fb73068
Use hostmacher to replace matchlist. And we introduce a better DialContext to do a full host/IP check, otherwise the attackers can still bypass the allow/block list by a 302 redirection.
547 lines
19 KiB
Go
547 lines
19 KiB
Go
// Copyright 2021 The Gitea Authors. 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 mirror
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import (
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"context"
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"fmt"
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"strings"
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"time"
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"code.gitea.io/gitea/models"
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admin_model "code.gitea.io/gitea/models/admin"
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"code.gitea.io/gitea/models/db"
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"code.gitea.io/gitea/modules/cache"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/lfs"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/notification"
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repo_module "code.gitea.io/gitea/modules/repository"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/timeutil"
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"code.gitea.io/gitea/modules/util"
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)
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// gitShortEmptySha Git short empty SHA
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const gitShortEmptySha = "0000000"
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// UpdateAddress writes new address to Git repository and database
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func UpdateAddress(m *models.Mirror, addr string) error {
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remoteName := m.GetRemoteName()
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repoPath := m.Repo.RepoPath()
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// Remove old remote
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_, err := git.NewCommand("remote", "rm", remoteName).RunInDir(repoPath)
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if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
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return err
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}
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_, err = git.NewCommand("remote", "add", remoteName, "--mirror=fetch", addr).RunInDir(repoPath)
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if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
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return err
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}
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if m.Repo.HasWiki() {
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wikiPath := m.Repo.WikiPath()
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wikiRemotePath := repo_module.WikiRemoteURL(addr)
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// Remove old remote of wiki
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_, err := git.NewCommand("remote", "rm", remoteName).RunInDir(wikiPath)
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if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
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return err
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}
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_, err = git.NewCommand("remote", "add", remoteName, "--mirror=fetch", wikiRemotePath).RunInDir(wikiPath)
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if err != nil && !strings.HasPrefix(err.Error(), "exit status 128 - fatal: No such remote ") {
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return err
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}
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}
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m.Repo.OriginalURL = addr
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return models.UpdateRepositoryCols(m.Repo, "original_url")
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}
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// mirrorSyncResult contains information of a updated reference.
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// If the oldCommitID is "0000000", it means a new reference, the value of newCommitID is empty.
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// If the newCommitID is "0000000", it means the reference is deleted, the value of oldCommitID is empty.
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type mirrorSyncResult struct {
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refName string
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oldCommitID string
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newCommitID string
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}
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// parseRemoteUpdateOutput detects create, update and delete operations of references from upstream.
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func parseRemoteUpdateOutput(output string) []*mirrorSyncResult {
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results := make([]*mirrorSyncResult, 0, 3)
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lines := strings.Split(output, "\n")
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for i := range lines {
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// Make sure reference name is presented before continue
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idx := strings.Index(lines[i], "-> ")
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if idx == -1 {
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continue
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}
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refName := lines[i][idx+3:]
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switch {
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case strings.HasPrefix(lines[i], " * "): // New reference
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if strings.HasPrefix(lines[i], " * [new tag]") {
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refName = git.TagPrefix + refName
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} else if strings.HasPrefix(lines[i], " * [new branch]") {
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refName = git.BranchPrefix + refName
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}
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results = append(results, &mirrorSyncResult{
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refName: refName,
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oldCommitID: gitShortEmptySha,
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})
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case strings.HasPrefix(lines[i], " - "): // Delete reference
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results = append(results, &mirrorSyncResult{
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refName: refName,
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newCommitID: gitShortEmptySha,
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})
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case strings.HasPrefix(lines[i], " + "): // Force update
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if idx := strings.Index(refName, " "); idx > -1 {
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refName = refName[:idx]
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}
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delimIdx := strings.Index(lines[i][3:], " ")
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if delimIdx == -1 {
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log.Error("SHA delimiter not found: %q", lines[i])
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continue
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}
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shas := strings.Split(lines[i][3:delimIdx+3], "...")
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if len(shas) != 2 {
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log.Error("Expect two SHAs but not what found: %q", lines[i])
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continue
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}
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results = append(results, &mirrorSyncResult{
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refName: refName,
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oldCommitID: shas[0],
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newCommitID: shas[1],
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})
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case strings.HasPrefix(lines[i], " "): // New commits of a reference
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delimIdx := strings.Index(lines[i][3:], " ")
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if delimIdx == -1 {
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log.Error("SHA delimiter not found: %q", lines[i])
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continue
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}
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shas := strings.Split(lines[i][3:delimIdx+3], "..")
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if len(shas) != 2 {
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log.Error("Expect two SHAs but not what found: %q", lines[i])
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continue
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}
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results = append(results, &mirrorSyncResult{
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refName: refName,
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oldCommitID: shas[0],
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newCommitID: shas[1],
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})
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default:
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log.Warn("parseRemoteUpdateOutput: unexpected update line %q", lines[i])
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}
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}
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return results
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}
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func pruneBrokenReferences(ctx context.Context,
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m *models.Mirror,
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repoPath string,
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timeout time.Duration,
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stdoutBuilder, stderrBuilder *strings.Builder,
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sanitizer *strings.Replacer,
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isWiki bool) error {
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wiki := ""
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if isWiki {
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wiki = "Wiki "
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}
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stderrBuilder.Reset()
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stdoutBuilder.Reset()
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pruneErr := git.NewCommandContext(ctx, "remote", "prune", m.GetRemoteName()).
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SetDescription(fmt.Sprintf("Mirror.runSync %ssPrune references: %s ", wiki, m.Repo.FullName())).
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RunInDirTimeoutPipeline(timeout, repoPath, stdoutBuilder, stderrBuilder)
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if pruneErr != nil {
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stdout := stdoutBuilder.String()
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stderr := stderrBuilder.String()
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// sanitize the output, since it may contain the remote address, which may
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// contain a password
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stderrMessage := sanitizer.Replace(stderr)
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stdoutMessage := sanitizer.Replace(stdout)
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log.Error("Failed to prune mirror repository %s%-v references:\nStdout: %s\nStderr: %s\nErr: %v", wiki, m.Repo, stdoutMessage, stderrMessage, pruneErr)
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desc := fmt.Sprintf("Failed to prune mirror repository %s'%s' references: %s", wiki, repoPath, stderrMessage)
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if err := admin_model.CreateRepositoryNotice(desc); err != nil {
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log.Error("CreateRepositoryNotice: %v", err)
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}
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// this if will only be reached on a successful prune so try to get the mirror again
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}
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return pruneErr
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}
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// runSync returns true if sync finished without error.
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func runSync(ctx context.Context, m *models.Mirror) ([]*mirrorSyncResult, bool) {
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repoPath := m.Repo.RepoPath()
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wikiPath := m.Repo.WikiPath()
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timeout := time.Duration(setting.Git.Timeout.Mirror) * time.Second
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log.Trace("SyncMirrors [repo: %-v]: running git remote update...", m.Repo)
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gitArgs := []string{"remote", "update"}
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if m.EnablePrune {
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gitArgs = append(gitArgs, "--prune")
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}
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gitArgs = append(gitArgs, m.GetRemoteName())
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remoteAddr, remoteErr := git.GetRemoteAddress(repoPath, m.GetRemoteName())
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if remoteErr != nil {
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log.Error("GetRemoteAddress Error %v", remoteErr)
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}
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stdoutBuilder := strings.Builder{}
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stderrBuilder := strings.Builder{}
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if err := git.NewCommandContext(ctx, gitArgs...).
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SetDescription(fmt.Sprintf("Mirror.runSync: %s", m.Repo.FullName())).
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RunInDirTimeoutPipeline(timeout, repoPath, &stdoutBuilder, &stderrBuilder); err != nil {
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stdout := stdoutBuilder.String()
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stderr := stderrBuilder.String()
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// sanitize the output, since it may contain the remote address, which may
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// contain a password
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sanitizer := util.NewURLSanitizer(remoteAddr, true)
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stderrMessage := sanitizer.Replace(stderr)
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stdoutMessage := sanitizer.Replace(stdout)
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// Now check if the error is a resolve reference due to broken reference
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if strings.Contains(stderr, "unable to resolve reference") && strings.Contains(stderr, "reference broken") {
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log.Warn("Failed to update mirror repository %-v due to broken references:\nStdout: %s\nStderr: %s\nErr: %v\nAttempting Prune", m.Repo, stdoutMessage, stderrMessage, err)
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err = nil
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// Attempt prune
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pruneErr := pruneBrokenReferences(ctx, m, repoPath, timeout, &stdoutBuilder, &stderrBuilder, sanitizer, false)
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if pruneErr == nil {
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// Successful prune - reattempt mirror
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stderrBuilder.Reset()
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stdoutBuilder.Reset()
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if err = git.NewCommandContext(ctx, gitArgs...).
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SetDescription(fmt.Sprintf("Mirror.runSync: %s", m.Repo.FullName())).
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RunInDirTimeoutPipeline(timeout, repoPath, &stdoutBuilder, &stderrBuilder); err != nil {
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stdout := stdoutBuilder.String()
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stderr := stderrBuilder.String()
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// sanitize the output, since it may contain the remote address, which may
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// contain a password
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stderrMessage = sanitizer.Replace(stderr)
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stdoutMessage = sanitizer.Replace(stdout)
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}
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}
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}
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// If there is still an error (or there always was an error)
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if err != nil {
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log.Error("Failed to update mirror repository %-v:\nStdout: %s\nStderr: %s\nErr: %v", m.Repo, stdoutMessage, stderrMessage, err)
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desc := fmt.Sprintf("Failed to update mirror repository '%s': %s", repoPath, stderrMessage)
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if err = admin_model.CreateRepositoryNotice(desc); err != nil {
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log.Error("CreateRepositoryNotice: %v", err)
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}
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return nil, false
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}
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}
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output := stderrBuilder.String()
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gitRepo, err := git.OpenRepository(repoPath)
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if err != nil {
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log.Error("OpenRepository: %v", err)
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return nil, false
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}
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log.Trace("SyncMirrors [repo: %-v]: syncing releases with tags...", m.Repo)
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if err = repo_module.SyncReleasesWithTags(m.Repo, gitRepo); err != nil {
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log.Error("Failed to synchronize tags to releases for repository: %v", err)
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}
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if m.LFS && setting.LFS.StartServer {
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log.Trace("SyncMirrors [repo: %-v]: syncing LFS objects...", m.Repo)
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endpoint := lfs.DetermineEndpoint(remoteAddr.String(), m.LFSEndpoint)
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lfsClient := lfs.NewClient(endpoint, nil)
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if err = repo_module.StoreMissingLfsObjectsInRepository(ctx, m.Repo, gitRepo, lfsClient); err != nil {
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log.Error("Failed to synchronize LFS objects for repository: %v", err)
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}
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}
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gitRepo.Close()
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log.Trace("SyncMirrors [repo: %-v]: updating size of repository", m.Repo)
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if err := m.Repo.UpdateSize(db.DefaultContext); err != nil {
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log.Error("Failed to update size for mirror repository: %v", err)
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}
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if m.Repo.HasWiki() {
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log.Trace("SyncMirrors [repo: %-v Wiki]: running git remote update...", m.Repo)
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stderrBuilder.Reset()
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stdoutBuilder.Reset()
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if err := git.NewCommandContext(ctx, "remote", "update", "--prune", m.GetRemoteName()).
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SetDescription(fmt.Sprintf("Mirror.runSync Wiki: %s ", m.Repo.FullName())).
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RunInDirTimeoutPipeline(timeout, wikiPath, &stdoutBuilder, &stderrBuilder); err != nil {
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stdout := stdoutBuilder.String()
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stderr := stderrBuilder.String()
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// sanitize the output, since it may contain the remote address, which may
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// contain a password
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remoteAddr, remoteErr := git.GetRemoteAddress(wikiPath, m.GetRemoteName())
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if remoteErr != nil {
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log.Error("GetRemoteAddress Error %v", remoteErr)
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}
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// sanitize the output, since it may contain the remote address, which may
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// contain a password
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sanitizer := util.NewURLSanitizer(remoteAddr, true)
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stderrMessage := sanitizer.Replace(stderr)
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stdoutMessage := sanitizer.Replace(stdout)
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// Now check if the error is a resolve reference due to broken reference
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if strings.Contains(stderrMessage, "unable to resolve reference") && strings.Contains(stderrMessage, "reference broken") {
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log.Warn("Failed to update mirror wiki repository %-v due to broken references:\nStdout: %s\nStderr: %s\nErr: %v\nAttempting Prune", m.Repo, stdoutMessage, stderrMessage, err)
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err = nil
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// Attempt prune
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pruneErr := pruneBrokenReferences(ctx, m, repoPath, timeout, &stdoutBuilder, &stderrBuilder, sanitizer, true)
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if pruneErr == nil {
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// Successful prune - reattempt mirror
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stderrBuilder.Reset()
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stdoutBuilder.Reset()
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if err = git.NewCommandContext(ctx, "remote", "update", "--prune", m.GetRemoteName()).
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SetDescription(fmt.Sprintf("Mirror.runSync Wiki: %s ", m.Repo.FullName())).
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RunInDirTimeoutPipeline(timeout, wikiPath, &stdoutBuilder, &stderrBuilder); err != nil {
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stdout := stdoutBuilder.String()
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stderr := stderrBuilder.String()
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stderrMessage = sanitizer.Replace(stderr)
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stdoutMessage = sanitizer.Replace(stdout)
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}
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}
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}
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// If there is still an error (or there always was an error)
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if err != nil {
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log.Error("Failed to update mirror repository wiki %-v:\nStdout: %s\nStderr: %s\nErr: %v", m.Repo, stdoutMessage, stderrMessage, err)
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desc := fmt.Sprintf("Failed to update mirror repository wiki '%s': %s", wikiPath, stderrMessage)
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if err = admin_model.CreateRepositoryNotice(desc); err != nil {
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log.Error("CreateRepositoryNotice: %v", err)
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}
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return nil, false
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}
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}
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log.Trace("SyncMirrors [repo: %-v Wiki]: git remote update complete", m.Repo)
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}
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log.Trace("SyncMirrors [repo: %-v]: invalidating mirror branch caches...", m.Repo)
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branches, _, err := git.GetBranchesByPath(m.Repo.RepoPath(), 0, 0)
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if err != nil {
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log.Error("GetBranches: %v", err)
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return nil, false
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}
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for _, branch := range branches {
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cache.Remove(m.Repo.GetCommitsCountCacheKey(branch.Name, true))
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}
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m.UpdatedUnix = timeutil.TimeStampNow()
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return parseRemoteUpdateOutput(output), true
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}
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// SyncPullMirror starts the sync of the pull mirror and schedules the next run.
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func SyncPullMirror(ctx context.Context, repoID int64) bool {
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log.Trace("SyncMirrors [repo_id: %v]", repoID)
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defer func() {
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err := recover()
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if err == nil {
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return
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}
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// There was a panic whilst syncMirrors...
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log.Error("PANIC whilst syncMirrors[%d] Panic: %v\nStacktrace: %s", repoID, err, log.Stack(2))
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}()
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m, err := models.GetMirrorByRepoID(repoID)
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if err != nil {
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log.Error("GetMirrorByRepoID [%d]: %v", repoID, err)
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return false
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}
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log.Trace("SyncMirrors [repo: %-v]: Running Sync", m.Repo)
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results, ok := runSync(ctx, m)
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if !ok {
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return false
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}
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log.Trace("SyncMirrors [repo: %-v]: Scheduling next update", m.Repo)
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m.ScheduleNextUpdate()
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if err = models.UpdateMirror(m); err != nil {
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log.Error("UpdateMirror [%d]: %v", m.RepoID, err)
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return false
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}
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var gitRepo *git.Repository
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if len(results) == 0 {
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log.Trace("SyncMirrors [repo: %-v]: no branches updated", m.Repo)
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} else {
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log.Trace("SyncMirrors [repo: %-v]: %d branches updated", m.Repo, len(results))
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gitRepo, err = git.OpenRepository(m.Repo.RepoPath())
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if err != nil {
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log.Error("OpenRepository [%d]: %v", m.RepoID, err)
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return false
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}
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defer gitRepo.Close()
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if ok := checkAndUpdateEmptyRepository(m, gitRepo, results); !ok {
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return false
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}
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}
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for _, result := range results {
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// Discard GitHub pull requests, i.e. refs/pull/*
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if strings.HasPrefix(result.refName, "refs/pull/") {
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continue
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}
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tp, _ := git.SplitRefName(result.refName)
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// Create reference
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if result.oldCommitID == gitShortEmptySha {
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if tp == git.TagPrefix {
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tp = "tag"
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} else if tp == git.BranchPrefix {
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tp = "branch"
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}
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commitID, err := gitRepo.GetRefCommitID(result.refName)
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if err != nil {
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log.Error("gitRepo.GetRefCommitID [repo_id: %d, ref_name: %s]: %v", m.RepoID, result.refName, err)
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continue
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}
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notification.NotifySyncPushCommits(m.Repo.MustOwner(), m.Repo, &repo_module.PushUpdateOptions{
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RefFullName: result.refName,
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OldCommitID: git.EmptySHA,
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NewCommitID: commitID,
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}, repo_module.NewPushCommits())
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notification.NotifySyncCreateRef(m.Repo.MustOwner(), m.Repo, tp, result.refName)
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continue
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}
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// Delete reference
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if result.newCommitID == gitShortEmptySha {
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notification.NotifySyncDeleteRef(m.Repo.MustOwner(), m.Repo, tp, result.refName)
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continue
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}
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// Push commits
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oldCommitID, err := git.GetFullCommitID(gitRepo.Path, result.oldCommitID)
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if err != nil {
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log.Error("GetFullCommitID [%d]: %v", m.RepoID, err)
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continue
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}
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newCommitID, err := git.GetFullCommitID(gitRepo.Path, result.newCommitID)
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if err != nil {
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log.Error("GetFullCommitID [%d]: %v", m.RepoID, err)
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continue
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}
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commits, err := gitRepo.CommitsBetweenIDs(newCommitID, oldCommitID)
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if err != nil {
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log.Error("CommitsBetweenIDs [repo_id: %d, new_commit_id: %s, old_commit_id: %s]: %v", m.RepoID, newCommitID, oldCommitID, err)
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continue
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}
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theCommits := repo_module.GitToPushCommits(commits)
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if len(theCommits.Commits) > setting.UI.FeedMaxCommitNum {
|
|
theCommits.Commits = theCommits.Commits[:setting.UI.FeedMaxCommitNum]
|
|
}
|
|
|
|
theCommits.CompareURL = m.Repo.ComposeCompareURL(oldCommitID, newCommitID)
|
|
|
|
notification.NotifySyncPushCommits(m.Repo.MustOwner(), m.Repo, &repo_module.PushUpdateOptions{
|
|
RefFullName: result.refName,
|
|
OldCommitID: oldCommitID,
|
|
NewCommitID: newCommitID,
|
|
}, theCommits)
|
|
}
|
|
log.Trace("SyncMirrors [repo: %-v]: done notifying updated branches/tags - now updating last commit time", m.Repo)
|
|
|
|
// Get latest commit date and update to current repository updated time
|
|
commitDate, err := git.GetLatestCommitTime(m.Repo.RepoPath())
|
|
if err != nil {
|
|
log.Error("GetLatestCommitDate [%d]: %v", m.RepoID, err)
|
|
return false
|
|
}
|
|
|
|
if err = models.UpdateRepositoryUpdatedTime(m.RepoID, commitDate); err != nil {
|
|
log.Error("Update repository 'updated_unix' [%d]: %v", m.RepoID, err)
|
|
return false
|
|
}
|
|
|
|
log.Trace("SyncMirrors [repo: %-v]: Successfully updated", m.Repo)
|
|
|
|
return true
|
|
}
|
|
|
|
func checkAndUpdateEmptyRepository(m *models.Mirror, gitRepo *git.Repository, results []*mirrorSyncResult) bool {
|
|
if !m.Repo.IsEmpty {
|
|
return true
|
|
}
|
|
|
|
hasDefault := false
|
|
hasMaster := false
|
|
hasMain := false
|
|
defaultBranchName := m.Repo.DefaultBranch
|
|
if len(defaultBranchName) == 0 {
|
|
defaultBranchName = setting.Repository.DefaultBranch
|
|
}
|
|
firstName := ""
|
|
for _, result := range results {
|
|
if strings.HasPrefix(result.refName, "refs/pull/") {
|
|
continue
|
|
}
|
|
tp, name := git.SplitRefName(result.refName)
|
|
if len(tp) > 0 && tp != git.BranchPrefix {
|
|
continue
|
|
}
|
|
if len(firstName) == 0 {
|
|
firstName = name
|
|
}
|
|
|
|
hasDefault = hasDefault || name == defaultBranchName
|
|
hasMaster = hasMaster || name == "master"
|
|
hasMain = hasMain || name == "main"
|
|
}
|
|
|
|
if len(firstName) > 0 {
|
|
if hasDefault {
|
|
m.Repo.DefaultBranch = defaultBranchName
|
|
} else if hasMaster {
|
|
m.Repo.DefaultBranch = "master"
|
|
} else if hasMain {
|
|
m.Repo.DefaultBranch = "main"
|
|
} else {
|
|
m.Repo.DefaultBranch = firstName
|
|
}
|
|
// Update the git repository default branch
|
|
if err := gitRepo.SetDefaultBranch(m.Repo.DefaultBranch); err != nil {
|
|
if !git.IsErrUnsupportedVersion(err) {
|
|
log.Error("Failed to update default branch of underlying git repository %-v. Error: %v", m.Repo, err)
|
|
desc := fmt.Sprintf("Failed to uupdate default branch of underlying git repository '%s': %v", m.Repo.RepoPath(), err)
|
|
if err = admin_model.CreateRepositoryNotice(desc); err != nil {
|
|
log.Error("CreateRepositoryNotice: %v", err)
|
|
}
|
|
return false
|
|
}
|
|
}
|
|
m.Repo.IsEmpty = false
|
|
// Update the is empty and default_branch columns
|
|
if err := models.UpdateRepositoryCols(m.Repo, "default_branch", "is_empty"); err != nil {
|
|
log.Error("Failed to update default branch of repository %-v. Error: %v", m.Repo, err)
|
|
desc := fmt.Sprintf("Failed to uupdate default branch of repository '%s': %v", m.Repo.RepoPath(), err)
|
|
if err = admin_model.CreateRepositoryNotice(desc); err != nil {
|
|
log.Error("CreateRepositoryNotice: %v", err)
|
|
}
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|